Congrats on Front Page!!!
Love it man! This thing kicks ass! And ha, I'm like you. I get my best work done at night too, though I could never produce something awesome like this in one night. And I should probably stop staying up all night to do school work but I digress.
I love the contrast between the characters and the background. I can't tell if you drew those bricks in Photoshop (or a vector program) or if its a stock photo that you have that you doctored up with some good filters, lighting changes, and the graffiti. Either way it looks great and isn't distracting, though the graffiti is fun to look at regardless.
Speaking of the graffiti I LOVE whatever brush settings you used for the chalk. It really gives it a rich organic feel that further brings the characters to life, and also adds to the contrast between the backgrounds and the characters. The background has an organic feeling to it, very realistic, while the characters (obviously well drawn) have a great cartoon feeling to them (for obvious fucking reasons).
As always I love your color choices and shading work. Brilliant as always. The subtle details add some life to the picture as well, such as the freckles, restrained lighting on the gun (very nice) amongst others. Oh, and your light sources are great.
I'm not sure if I like the glow or not that Jazz (I assume its Jazz) is...holding? I see you experimented with a different style of creating magic looking effects, and I think it works for the picture (at least it doesn't NOT work) but I feel like something is missing from it that will make it perfect. Don't ask me what it is...just a feeling.
Other than that though, a perfect 10/10 and 5/5.