Wait a minute. So you want the bullet to travel through his arm, so there will be a clear hole? Or do you want something a like a bloody wound? If you want a clear hole, it wouldn't be realistic looking, but you can mask out the permenant marker. But if you want something more realistic, I suggest making a wound. You don't always need special effects for these types of things
, sometimes I find it easier to use props. I would recommend that you buy a small bloodbag at the store, or use red dye that is slightly tainted dark to give it a realistic touch. I don't think you seriously need to add special effects to this video (besides the bullet/muzzle flash). Plus I don't find that the blood presets look realistic enough. But do what you want to do! You might find it that you can create a really awesome blood effect, I can't at all. I think that this effect would be very possible with Visionlab, good luck. Hope this stuff helped.