Copperheads and Rattlesnakes have a distinctive diamond shaped pattern on their backs.

Many venomous snakes have a really flat looking top of their heads.

I was cleaning out some leaves by the garage and a 7-9 inch long snake was in them, he started striking at the broom.
It was a baby copperhead. He go relocated off into the woods far away from the garage.

On a side note I found an over 6 foot long blacksnake skin near the garage about a week after that.

As already stated, attaching a pic is fairly easy.