Lol, hmmm see ur before pic it has been modded by someone. Lol, did u mod the "before" pic? if not mate am afraid u've modded a mod, :P lol
Use http://www.netcarshow.com/ for "stocks" to mod rather than using photobucket? not bad for a first m8 jus i wudn't use photobucket to find stocks use that site and use http://www.digimods.co.uk/ for tips. I wudn't post there tho they're not the most of helpful bunch, lol.
Ur mods are pretty sound, the blending is pretty good some parts look slightly off like the graphic doesn't look like it wrapped round the car if u made the shadows and light reflections on top of the graphic it wud look better. In my experience i wud avoid car graphics.