Part of the issue is that you're trying to composite in an element that is not right for the scene. Blood doesn't make a little floaty dust cloud at the impact point of the entry wound.
In fact, there would be no blood splatter at all on the front of the body. On a through-and-through shot, you would get blood spray from the exit wound; the entry would consist of a small hole. Sometimes you can see a ripple of impact go through the soft tissues, but there is basically never a blood spatter from the entry wound.
Source: I edit videos for a hunting company, and have watched dozens, if not hundreds, of clips of game animals shot with a variety of weapons. It is an oddly specific and grisly area of expertise, but apparently is useful knowledge today.