To that question I say... Why not?
Here are a few of my earlier paintings, all of them now in the homes of collectors.
Some of these go way back, I had a fascination with the way sunflowers look when nearly dead all shriveling and curling in various directions. I was also into a period of experimenting with acrylics, oil pastels, pencils and what-have-you on heavy paper with painted borders on canvas. I'm done with that now, I think, got it out of my system.