Comic cover plan

I am planning my comic cover for my comic

Here is what I am trying right now

I will be getting advice for how I can improve this, or if I should change my idea. With this cover, I am practicing prospective with characters, as I know I am not the best at this. I look to better my idea and trial another angle to challenge myself to improve me work.
I got advice from my tutor and I will be trying new ideas
I don't like this one but here it is

It's a good idea but I did it all wrong. The next idea turned out a lot better than this one

I would have to better the posture and the legs but this idea is not bad. I also need to work on Silver's face more.