For the first picture, I think it would look better if you either used 2 different Fedoras or if you flipped the one on Fiora so that it was actually pointing front down.
For the second and third, I like the concept, but feel like there's too much white space in the image.
For the second image in particular, you could fill some of the space by adding a hex tile for Dark Star Thresh, then making all the tiles bigger.
For the third image, I'd probably make all of the triangles larger, so that they extend Top to Bottom of the image. I might consider doing a shadowy background on it too, potentially adding "Master of Shadows" above Shockblade Zed's triangle.
Looks pretty good all in all though!