sexy looking panty-guy! ^^
I guess, this should be blood on his, right? It is painted, isn't it?
Have You tried the folowing:
mix some drops of blood-red, brown-ink and lots of water (*), put a brush into it and soak it. Then put it infront of the mini and make a decent blow ... it will downright splatter Your mini.
Test it before actually doing it on a given mini, of course!

You may also cover some areas with paper or tissue and You can vary the mixture of the named (*) things to vary the look of the blood.
However - You painting-style looks very cool! I like it!
best wishes
DK