This is a excellent piece of work overall the shading correct and your art style is unique. I like how the the extra words added in the background im so fly adding a little humor to artwork always life to your work. Overall great job especially on the effects of the airbrush and the wind flowing under sonic. I also like the designing of the background the rocks with the shading and the small things like adding birds flying in the background. But the best you did is the way you drew sonic jumping with his mouth open to the wind. Hope you keep the good work and keep practicing.