Where would I go to ask for

[Phaze]

Well, as far as pixel art goes... you are here. Post a thread in the spriting section showing what you've got, then wait for constructive crit to roll in o3o

For level design? The forum isn't dedicated to it, per se but a few members here do have experience with making games so they can probably help you out with design, too
There's a thread in the Gamedev section for posting miscellany related to gamedev that isn't big enough for its own thread yet.