Hope you don't mind mate, but i didn't have anything else to work with.
1.- Firts you need to find some bloody images... google "blood, vampires, etc." and you will find some really cool bloody pics. save them to your computer.
2.- to begin you need two pics.. your original and the bloody one.. open them both
3.- working on the bloody one, just go to --select, color range, and click on the blood--
4.- copy and paste your selection onto your first picture.CTRL T to move around and make as big or as small as you need it to be...
erase what you don't need, and keep what you want...
.- After moving around and finding the best place to position your new layer, erase what you don't want... just try to make it look a little more realistic and as if it belong there...then change layer mode to "overlay"
You will have to duplicate your layer a couple times, and keep on playing with the layer mode..
soft light, hard light and overlay are the lighting that I usually use for blood, but play around and see what you can get.
You are done....
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Now to add blood to a room..1You need two images, the original and a puddle of blood pic... Google it and save anything you like to your computer.
2.- Working on the puddle of blood pic, go to --select, color range-- and select the background (just click on the background)then CTRL +SHIFT + I to invert your selection , this will select the blood instead of the background.
3.- copy and paste your selection onto your first picture.
4.- CTRL T to move around and make as big or as small as you want.
5.- When you have your second layer where you want it.. erase what you don't need. and change layer mode to overlay.6.- Open a new bloody pic... it could be the same.. but I like to use different pics.
6.- In your new pic... do the same thing you did with the first bloody pic..--select, color range, bacground-- then CTRL SHIFT I to inverse selection, then copy and paste it into your original pic.
again CTRL T to move selection.. place it where you need it.I will place it on the bench, just to make it look like there is blood dripping from it..
8.- Change the mode to overlay and you are done with the chair...
Now do the same thing with the guy, look for a cool bloody pic. to overlay over his body...and then using some blood brushes add some paint to the floor... just to give the appearance of more blood.
then flatten your image and duplicate layer. change the mode to "soft light" and you are done...(that will make the room look a little more darker, just to set the mood of the bloody situation)
and now you are done... :P
ps. you can find some photoshop blood brushes here and here
and here
