Well, I am no artist, don't know anything about drawing. For improvement, It could be nice to see knees and hands be bigger, they seem so small next to the muscles. Though I don't know if those parts being small is a staple of hyper style. It all looks good as is though.

With the knees and hands, I wanna keep them to a more realistic size (especially the hands, found them weird if they where the same size of the forearms) to show the size of the muscles. Though I could try making the knees bigger.
Thank you for the comment. ^^

I think your art looks great.

Thank you! ^^
Got something more to say about my art?

I'd say keep up the great work with the muscle art.