I like the inking, not many people do it now, but you did a good job. the colors and the painting seem a bit lacking though, none of the colors go together in regards to color theory, you have a purple sky, bright yellow windows lime green water,bright green hands, a very nice set of blues on superman, but a very over saturated emblem on his chest, and then batman (who I'm assuming is the focal point of the drawing) is very washed out, with a very small range of grays (a gray batman is fine, but he needs more than light gray, and medium grey when shading him). you also made batman's and superman's skin tones yellow, which doesn't look very nice. There's also an issue with your background, it breaks any perspective in the drawing, the rows of windows on the buildings start going straight way above your horizon line, and overall they just aren't very well rendered for how bold the lines on them are. I think you'd be better off making the background with no inking so that we can focus on the foreground. One more thing, superman's left knee is farther away from the viewer, but you drew it lower than his right knee, and you're drawing his forearms as if they're disconnected from the upper arms, and just facing forward, if you looks up the anatomy of the forearm, they almost have rows of muscles that come from the sides of the upper arm. But all in all, I like it