What are three important things about camouflage?

The coloring and apparent shape of an animal or object should resemble its background. For instance, to camouflage the bottom of a fishing rowboat, you would paint it in varying colors of light to medium blue, because blue is what the fish see when they look up.

If a forest is the back ground, then the camouflage would consiste of muted browns, greys, charcoal black with a few narrow slashes of tan here and there.

Arms and legs are very noticable, so an arm or a leg might be colored with a black or tan wide stripe of color with no straight edges 1.3 or 2/3 of the way down. (Or up) to make the arm or leg look like two different things, not just one limb.

A charcoal or grey stripe could run up from feet to top of head to resemble a small tree, or the shadow of one.