Hey Sproket, I love your work but have to agree with the general consensus, the blood isn't really working. I understand what your going for and think it has potential; however, the lack of realism is killing it. If a big gorilla came along and smacked something hard enough to have ropes of flesh and blood flying off his hand his whole forearm would be covered in blood and gore. There would also be small amounts of spatter from the impact on other parts of the gorilla such as his face and chest. The color of the blood also looks off to me, it's too bright and opaque. When you get bloody gore it is a darker crimson with hints of purple, also translucent. I think if you combine this effect with more gore on the hand and spatter on select areas it will really come together.
Lastly, I think part of the problem that you are experiencing is due to your painting style. You have an incredible painting style that is very precise and controlled; however, blood spatter from blunt force trauma has none of these things. It is random and chaotic. I think when this comes together it will be incredible and suit the gorilla very well, but to achieve it I think you almost need to be less controlled and a little bit random. It's kind of like painting battle damage, often times the best work is created through techniques using sponges because you are forced into random patterns. When battle damage is to thought out it is obvious and loses the sense of realism.
Your work is always inspiring, happy painting!
shakes