This is.......okay. The background is pretty plain, just leaves all over the place. And your render doesn't blend in at all. Try experimenting with different brushes to get a wider variety of effects. And I'm not sure if there's light coming from anywhere, and I don't see any, so I would use some effects for that (I don't know how other people do it, but I change my brush to Soft Light and lower the opacity a bit, I've got issues with this kinda stuff too). I'm no expert on text, so I would suggest you ask somebody else about that.
