Photos Of Brazalian Wax How Do I Make A Collage Of Photos/pictures For My Desktop Background?

How do I make a collage of photos/pictures for my desktop background? - photos of brazalian wax

I take many pictures of beautiful flowers of the Internet and make a collage and set it as wallpaper. But if I stay in the same color, then all the pixels, and stretched, and if I want, is on the screen. Suggestions on how to do this best? Thank you!