I like that you went though the work of making the grass more realistic but keep it animated in style, that simple toon shading works for what you are doing. I personally like toon style of art better than realism, or most anime styles, so your art is a homerun in my park. The only thing that I think is wrong with this is its a little plain in my opinion, not enough is happening. I wish you would of put more action into this picture and make it more dynamic. I shall see you later! Keep that toon style up ok.
I think you did a really excellent job here. The grass was obviously a lot of work, but I think it came out really well. Maybe investigate grass and flower brushes for your favorite art program?
One minor thing, though, I would suggest that you move Hummingway a ways up, or possibly somewhere over to the left. Where he is right now, with the parallel between the lower line of his wings and the line of the hill, makes it look like a REALLY BIG hummingbird peeking over the hill. :3