INPUT ARTICLE: Article: Grab some fresh fruit, like a couple of oranges or a lemon. Peel the oranges or cut the lemon in two. Fill a bowl with 1 or 2 cups (237 or 473 ml) of water. Add the orange peels or lemon halves. Microwave for four minutes (or less, if needed, to avoid burning any fruit breaking the water’s surface). Let it sit anywhere from 30 minutes to 12 hours with the door kept shut. This is definitely advised if you used nail polish remover. Citrus should eliminate any lingering smell from that. Open a new box of baking soda or simply place an old one inside your microwave. Let it sit for 12 hours so it can absorb any smells that still linger. Alternately, dump fresh or used coffee grounds into a cup or bowl and use that instead. Either practice is a good preventative measure to keep slight odors from growing stronger between uses. Ideally, give the inside of your microwave a quick wipe down with paper towels and a mixture one part water and two parts vinegar after every use. If that isn’t possible, keep the door open after each use to air it out. Then give it a thorough cleaning at least once or twice a month. Any spills or other large messes should be cleaned immediately. If you don’t, these will cook and recook and stink up your microwave with each subsequent use.

SUMMARY: Microwave something citrusy. Absorb odors with baking soda or coffee grounds. Clean regularly to avoid more smells.

INPUT ARTICLE: Article: If you just want to create a simple collage with different transparencies, you can use an online tool to do so without having to download and install GIMP. You can't use Pine Tools to introduce a new photo, such as a celebrity, to a base photo in hopes of convincing people that the end result is a real photo. This is helpful when selecting photos to add to your project as layers. You may want to make a copy of the photos you plan on using by selecting them, pressing Ctrl+C (Windows) or ⌘ Command+C (Mac), and then pasting them in a common location such as the desktop. Once you know which photo you want to use as the background for your final image, you'll need to find the width and height (in pixels) for the photo so that you can create a properly sized canvas later:   Windows — Right-click the photo, click Properties, click the Details tab, and look for the numbers to the right of the "Dimensions" heading (you may need to scroll down).  Mac — Click the photo to select it, click File, click Get Info, and review the "Dimensions" heading in the "More Info" section (you may first have to click the More Info heading). Do the following depending on your operating system:   Windows — Go to https://www.gimp.org/downloads/, click Download GIMP directly, double-click the downloaded setup file, and follow the on-screen instructions.  Mac — Go to https://download.gimp.org/mirror/pub/gimp/v2.8/osx/ in your computer's web browser, click the gimp-2.8.10-dmg-1.dmg link, double-click the DMG file, click and drag the GIMP logo onto the "Applications" folder, and follow any additional instructions. On a Mac, you may need to verify the installation before you can install GIMP. Once you've installed GIMP, you can proceed with opening it, after which point you'll be able to begin overlaying your photos:   Windows — Click Start {"smallUrl":"https:\/\/www.wikihow.com\/images\/0\/07\/Windowsstart.png","bigUrl":"\/images\/thumb\/0\/07\/Windowsstart.png\/30px-Windowsstart.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of a Windows icon.\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Public_domain\">Public Domain<\/a><br>\n<\/p><\/div>"}, type in gimp and click GIMP at the top of the menu.  Mac — Click Spotlight {"smallUrl":"https:\/\/www.wikihow.com\/images\/e\/ea\/Macspotlight.png","bigUrl":"\/images\/thumb\/e\/ea\/Macspotlight.png\/30px-Macspotlight.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of a Mac icon.\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a><br>\n<\/p><\/div>"}, type in gimp, double-click GIMP, and click Open if prompted.

SUMMARY:
Consider using PineTools. Make sure all your photos are in one location. Find out the size of your main photo. Download and install GIMP. Open GIMP.