Re: Who's Injured?! Medic is here!
Wow, pretty good!
What I don't like about the last one is that it's too yellow-ish for my taste. And I see you applied for some outer glow. Try to make it as faded as possible. Either change the blending mode or decrease it from the spread. But the best option would be from the blending mode, in my opinion.
As well, try to give it some depth... I mean I for example darken the edges and lighten the central point of the sig. As well some sharpening, but not too much, it would help as well.
But overall your sigs are pretty great. Just work on these details and they're gonna come out perfectly!