I chose to use white gesso and chalk. I like the thickness of the gesso and texture that remains with the gesso is used in excess.
I chose leaves from my garden that were full, green and had strong veins on the backside. I coated the backside of the leaf with gesso, and pressed the on the black construction paper. Using a paper towel over the leaf, I rubbed all over the leaf, & pressing firmly. I moved the leaf to another area of the paper and made an second impression, this one was lighter than the first. I allowed the gesso to dry completely before moving on.
Holding the chalk flat on the paper (not like a pencil or brush) I rubbed the chalk in one direction, away from me. Using the chalk on the long flat side allows some of the black paper to peek through. I used blue and purple to accent the areas around the leaves, yellow and white highlights, with orange and red directly on the leaf prints.