After effects- creating the blood effects

Regarding the execution shot, when Phee is laying on the ground, I had several difficulties in achieving the blood effect I wanted. I went back to the this edit 3 separate occasions. The first time I achieved a badly colored blood splatter. This I achieved by getting hold of some stock footage of some blood splatter. I added this into the footage and added the screen function to remove the black. This was how I would normally remove the black from footage. Unfortunately this resulted in the blood being really faded and almost impossible to see. Following this I tried to color correct the blood color to the ext-reams of its capabilities, by increasing the redness etc. This resulted in little progress but resulted in an OK result.

After finishing it the first time I did some research to find a better method of removing the black. I found a fantastic tutorial on YouTube showing exactly how to do so using key-light black. This removed the black from the stock footage, without affecting the footage. This resulted in the red being really emphasized, due to the earlier color correction. This time I also tracked the blood footage to the body, as the original was done by eye. This therefore meant that the blood footage was perfectly attached to the correct point.
https://www.youtube.com/watch?v=a-zJKSIbHtU

The final time resulted in me coming back to the footage, as the blood color was still too exaggerated. I achieved this by lowering the rgb and the red. I also feathered the edges as well to improve the blending of the blood to the T-shirt. This overall resulted in the blood being more subtle and effective. below I have a screen shot of me working on the blood shot.