Well...I would do sth about the left char cuz a filter on a scan is kinda...u know ^^
personaly i dont like the sharp edges of the upper picture, try to add some shadow ot something like that
and at least you need a 1024*768 version of this wp, otherwise it won't get accepted ;)

^ i agree with him/her =P The right side is so smooth and nice but the right is so ahrd and sharp...unbalanced?

Um...the color kinda distracted me and the red words? I can't read it and it makes me want to read it but I CAN"T! >____<

Everything else is okei i guess =P

The character on the left isn't extracted very well...sides look pixelated...
never aply filter on the main scans...you applied some crosshatch (am i wrong?) filter to the char on the left...
there's too much going on in the wall...too busy, too man things, too many people....try to make it less busy...
about the screencaps...from the 3 of them, the ones in the bottom look smooth, they with thye wall and with the bg....but the top one doesn't...it doesn't blen right....
try to work on some of those things ;)
good luck !