You're going for dynamic, but this is squashed-in/very long focal length. In general the total opposite of that. There's more than one solution to this problem (actually multiple problems) but your last ref is a big clue. Look how forcing the perspective makes the hand jump out, and a whole lotta other things that bring up the contrast overall.
I'm also seeing in the refs contrast in the values (your values are flat) and the shapes (not strong silhouette on this one. Circles back into squashed perspective.)
Also look into lines of action, where this has weak/no line of action. IDK where that pose is going. Doesn't communicate.