It feels nice to make your own images but when you are in a hurry and don’t really want to make your own images here are a few free sites you can find some images to simply take and modify them anyway you like or you can even post them as is.
FreePik.com
This site is great it has many free Vectors, PSD, Icons and photos
FreeImages.com
This is another great website it features many new wonderful photos and illustrations.
tineye.com
This is a reverse image search.