Wow, these are great! I love the first two…can’t find any fault with them. I particularly like the effects you used on the eyes in both of these images.
The third one I don’t care for as much for some reason—maybe the character and background don’t seem to fit together as well, and I think the effects might be a bit overdone, though that could be a question of personal taste. I do like the design of the character, and your choice of shaders on the costume. I hope this is helpful.