I`m not an Expert with a Blood Dealing, but if you need quick help, i will give a try [slick] :
First it`s looks to red, try to use the burn tool to make it darker or try to use "Multiply or Overlay" in places like " head".
On the head: make more blood bleading down. Why? because there is to much of blood around ... and only a small Dot on the head, doesn`t looks to realistic [honesty] .
Ok! [:I forget about all of this Bull ... i just told.
Take a "Burn" tool>choose "Mid Tones" and put "Exposure-100%" everething is located on top toolbar, and try to make a dirt from the blood around the head as i did.
Here is an example, i dont know you like or not, but as i said "i just gave a try

" The place around the head has to be dark, becouse by my experience, when the blood got on the unlacked wood floor! it will overlay with wood floor in a 30m to 1hour, before photographers will come on place of Criminal.
Sorry for bad English `im not american or anglospeaking i was just hurry writing