Okay, here's my advice:
Human blood appears so little in containers, spill the container and you've got a murder scene. Don't be afraid to put more blood closer to the body and maybe leave some trails around if the victim is dragged.
The only spot on the human body with no bones is the stomach, because it holds all the main organs, which is not the back. If your victim gets their stomach ripped open, their organs should show, and not the bones.
You can gouge eyes out with spoons, forks, or anything that can scoop or stab. Doing this will leave the victim half blind, and most likely bleeding from the socket.
It takes about a minute-a minute thirty for a human victim to bleed out if their leg gets cut off.
The most blood in a human body might be the head, but it's actually the most moving limbs, so arms for fighters, legs for runners, and the chest for those who watch things on devices.
Caption this Meme 