This really came out very well! Great job! Spidey has one of the tougher costumes to draw and you handled it masterfully. As far getting sharp edges, you might consider using the pen tool to set up a path which you can then convert to selection rather than lasso next time as it will give you smoother curves. Also, I think Spidey might benefit from a hard line on the lower right side of his face to better outline it's shape but it is the slightest of quibbles, as I said already... looks terrific!