Q: Though you want the air passage along your palette to be narrow, too little space produces just as breathy a sound as too much. Similarly, you must work to find the ideal distance between the front of your tongue and your teeth. Once you strike a balance between these two, you will be able to move your tongue back and forth in your mouth to produce different pitches. It's all with the tongue and the cheeks. When you "blow" air through your lips, the main problem is either you're blowing too much air, or the pucker is not quite right. A larger pucker (larger 'o' shape) and more air will increase volume; a smaller 'o' and less air will make your whistle quieter. It's important to pucker, but not too much; just enough to make a small 'o' with your lips. Try blowing; and if there is a sound, move your tongue around to how and what position gives you the best tone and output. The pitch comes from the amount of volume (physical volume) in the cavity you create between the opening in your lips and the back of your throat. The smaller this is, the higher the pitch will be and thus the larger this cavity is, the lower the pitch will be. In other words, the closer your tongue is to your mouth, the higher the pitch you produce. There are many ways of modulating the pitch of your whistle with your tongue: you can slide it back and forth like one of those cane whistles (actually very much like one of those) or you can bend it up and down creating a smaller or larger space. As you get better, you can use your throat as well to expand this area and reach even lower notes. The vibrato effect comes from moving your tongue back and forth very slightly to waver from two notes. As said before, it's all with the tongue and cheeks and practice. If you can whistle, whistle all the time.
A: Blow air out of your mouth slowly, experimenting with your tongue positioning. Adjust your volume and pitch. Experiment with pitch modulation and positioning.

Article: The goal of this is to be aware of your thoughts, self-judgement, pain, and any other feelings that may be hindering self-growth. This form of self-assessment is a relaxed awareness of your thoughts, somewhere in between a state of distraction and extreme focus.  Stand in front of a mirror as stripped down as possible (no make-up, no jewelry) and notice what thoughts are present. Categorize them (positive, negative, different feelings, etc). Practice anywhere from 5-30 minutes per day, taking note of what thoughts are often repeated. You don't have to like everything that you notice about yourself. Self-acceptance is simply recognizing your thoughts in order to figure out how to improve or change them. Once you are aware of your feelings, don't try to push them away--welcome them instead of hiding them.  Think about negative feelings as a hurt person. How would you treat a person in need? Treat your feelings that way. Welcome them to stay for a while and then turn that negativity into a learning opportunity. Ask yourself, "what can I learn from this negative thought?" If the thought is positive, don't run from it. Accept it and know that you are deserving of feeling good about yourself. You are not your emotions. Just because you feel angry or sad one day, doesn't make anger or sadness a part of who you are.  When you feel a negative emotion taking shape, use visualization techniques to stop it from weighing you down. Imagine your emotions as balloons which have the ability to just float away. Know that you have the option of when you will release that balloon, and that it has no control over you (and neither do your negative thoughts).
Question: What is a summary of what this article is about?
Recognize your thoughts and feelings. Welcome all of your feelings--good and bad. Separate yourself from your emotions through visualization.

Q: Select 3 small 1-way valves used for bicycle tires and pick out a hot knife with a tip that matches the size of the valves. Also, get a 50-60mL needleless syringe and 12 inches (30 cm) or so of plastic tubing that matches the size of the valve.  Some valves are 6 millimeters while others are 8 millimeters. Either kind is fine, but your plastic tubing should match. Find these syringes at most drug stores. Pick the kind that doesn't have a needle coming out. Look for hot knives at craft stores or home improvement stores. Change the tip on the hot knife to the round tip that's the same size as your valves. Plug the knife in to heat up. Gently pull the plunger back on the syringe about 1 inch (2.5 cm). When the knife is hot, plunge it into the side of the syringe, making a hole in the space you've created by moving the plunger. The exact spot doesn't matter, but place it closer to the tip edge of the syringe than the plunger end. Try to keep the hole as small as possible, as you want the valve to fit in the syringe tightly. Unscrew the black cap off the top of the valve. Turn the threaded part of the valve into the hole. Keep turning it to the right (clockwise) until the valve is as far as it will go in the hole. You'll still have the top part of the valve sticking out of the syringe. At this point, it can help to squeeze a little superglue around the valve, as that will help seal the pump. The length doesn't need to be exact. After you cut it, wedge it onto the tip of the syringe so it fits over it tightly. It can help to add a dollop of superglue around the edges to keep it in place. Push it in as far as it will go. It will eventually hit the lip, and when it does, stop there. You may need to use pliers to help work the valve into the tubing. Some people skip the tubing altogether and just press the valve into the end of the syringe's tip. You can test both options to see which works best for you. Use any length of tubing but make sure it's long enough to reach your pressure chamber. Once it's threaded onto the tubing, attach it to a valve on your pressure chamber to complete the pump.  A simple way to make a pressure chamber for your vacuum pump is to drill a hole on the top of a canning jar and insert a bicycle valve thread-side down into the hole. Seal the edges with silicone gel or superglue. To use the vacuum, start with the plunger of the syringe nearly all the way in and then pull it out to the end of the syringe to create a vacuum.
A:
Pick out a syringe, 3 1-way valves, a hot knife, and tubing. Burn a hole in the side of the syringe. Screw the valve into the hole you've just made. Cut a 1 in (2.5 cm) piece of plastic tubing and slip it on the syringe. Press the non-threaded side of another valve into the tubing. Attach tubing to the threaded end of the valve.