Vision and originality are great. Design could be pushed even further. Specifically showing how he generates his power, besides being painted around his eyes/hands. Maybe it forms like a flame? Then white and a few brights would be used to show more intensity. Or maybe it emits from specific markings on his body? Then show that. Fleshing out the design is one of the best parts! Technique is great in regards to linework/values/use of the medium. Don't be afraid to add some more dark values. Particularly around the neck and in areas under clothing and hair. What I find lacking though is the figure. The upperbody needs more arch, contraction in the abs, and proportionally it looks a little small in comparison to the lowerbody. Also think the leg farthest in perspective feels a bit too far. A really easy fix though if you just lasso it and work it in closer. Strongly recommend studying figure its super useful for beginners and pros alike. Especially a figure drawing class if you can. Nonetheless, very nice work and hope this helps!