Main thing to remember is to break up your outline. Some camos do it well; Predator Grey does, ACU does not. Or just go buy yourself a leafy-type camo tarp and cut it to size to drape over your shoulders. You just have to break up your outline, not be totally invisible. Or wear pink and blue . . .
The other thing is to eliminate movement. Predators key into movement much more than grazers/browsers. I had a friend who wanted to hunt coyotes, but he never scored because he would not sit still for more than 30 sec.