Yes, it''s definately a good wallpaper.
Ofcourse,there is always something to be perfected....
now, i'll comment only the things which i don't like or which i think will be better to be improved.
Here it is only one , but important thing.
Again the figure in the bg. I see a tendence, where you place the bg figure exactly behind the main one /like it's ghost,maybe

/. In my opinion here it must be placed in the left part of the wall. For instance, it might be enlarged, and turned on the other side - as if it looks at the stadium. This will give your work a little bit magic. Often the little corrections make the artwork to look completely different /just like a new red ribbon combined with an old black dress/.
I can't help myself saying that the lightning effects are superb. Also,the pose of the figure is very important ,so it can be bound with the conseption of the work, jere you've done great work. i know i have told i'll comment only things i don't like, but....