Hey, lookin good! If you're going to put your characters on a white background they need to be much lighter. As is you can hardly see any detail, almost pure silhouette on some of the characters because of how dark the rendering is. Either lighten em up or put a darker background behind them. Keep em comin :)
Just saw some of your stuff on Project Rooftop and I HAD to comment on this picture: that Daredevil looks amazing! The rest are awesome, too, but I've always been partial to DD's yellow costume and you've done SUCH a great job modernizing it.
thank you very much