I enjoy following your sketchbook. Marvelous digital art skills.
While we are on the sneakers subject; I noticed something about them; that guy with a jet integrated in his back on the glass building has a perspective issue with his sneaker on his left foot. The same perspective issue again with a sneaker is happening again on the guy who is flying over or being hit by a taxi. His sneaker on his right foot has some perspective issue, it is not so significant, but you can notice it. I am not at the level to criticize but I hope that I pointed something out.Great work, anyway. Keep on posting, I am following.
Thanks man for constructive critics, will see to fix it if i noticed that as problem. Because sometimes those things aren't that much important to me(sometimes i kinda like them because give me reason to work harder in some weird sense)