I've often thought I should make a bumper sticker for the back of my car that says I BRAKE FOR BUTTERFLIES, because I do. It's a reflex. This is how I thought of changing the deer warning sign to one with a butterfly.
This is a scene on a road close to our home. Used the Clone Stamp Tool in Photoshop to get rid of some wires, as well as the symbol of the deer on the sign. And because I don't know how to layer one image on to another, I printed the altered photo, inked in the butterfly in the blank yellow space and scanned that back into the computer.