Nice wall for a first!! I like the layout. And it shows you have a knack for some of the techniques.
The scan is adorable, but of poor quality. It is a bit blurry.
I can't tell exactly what season it is. The leaves represent the end of autumn yet the grass is green. You can
add variety to the way your leaves are facing by playing around with the brush settings. It looks as though it is windy
to the left due to the leaves but most of the grass blades are pointing to the right as if the wind is moving in that
direction.
That is all the pointers I could think of to help you out!
You should be proud of yourself! This is nice for a first and you are willing to learn to get better. I am sure your
next wallies will be be just that! ^_^
Keep it up!!