I'm surprised there's not at least one comment here...anywho,
the wall is very nice. Bright and happy, I like how the character doesn't
take up the whole wall and you made an effort to really design a BG.
The water is very well done, I do think it's a bit too rippled though.
It looks more like he's out at sea than just beside a lake. Perhaps if it was calmer
it would blend in more, the contrast is too big and noticable. The color
of the water could have been spread out a big more too, the dark blue looks captured
at the top instead of it gradually flowing into where he is.
As for the clouds, they're pretty cool. A bit too rough though and it clutters
the top. Perhaps leave the middle empty to create a more vast look and open.
The tree? is nice...maybe needs to be more rougher...but I love the colors it has.
Your vector is very bright...he would have really benefitted from darker shades, especially
on the jacket...it's so white. Also make sure you don't lower the size of the vector too much,
I can see jagged lines around his coat and face, those aren't pretty >_<
I hope I gave you some good advice to use next time around,
this wall has good potential. Just needs some tweaks to take it to the next level :3