I've been painting wall murals for several years.  

Hi Sunlight. Yes it is possible to paint, even if you do not consider yourself an artist. I beleive all of us has artistic abilities even if we don't know it yet. Sometimes they just have to be birthed in us at different times in our lives. Many times our creative side comes forth when we need it the most, like when tragedy strikes. Many times we just try something and stand back and look at it. Then say, wow, did i do that? If you want to paint a fower on your wall, you can use stencils if you don't feel comfortable doing it free hand. But if you decide to do it free hand, just remember, it's just paint. If you mess up just paint over it and start again. Go for it girl.