What Happens if I Paint on Primed vs Unprimed Leaves?

I painted on primed vs unprimed leaves to see if you need to prep dried and pressed leaves before painting. How do you prime a leaf, if you want the color of the leaf to show as the background for your painting? I tried priming my pressed leaves with two different types of gesso and comparing them to leaves I did not prime at all. Then I painted on all of them using acrylics.
I've also tried painting on leaves before and had some issues with the prepping as you can see in this video → I Painted 5 Summer Holiday Landscapes on LEAVES: • I Painted 5 Summer Hol...
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TIMESTAMPS
0:00 Prepping the leaves for painting
1:29 Primed with white gesso vs not
2:53 Primed with clear gesso vs not
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CREDITS
• / katiebrooksart
• / smollot
• / brittsarts
#leafart #natureart #PrimedVSnot

[@ParasolMushroomStudios]

I painted on leaves years ago...I don't know where the image is tho. I hope it hasn't fallen apart XD
These look cute :3

[@IvyLilyCreative]

Thanks! Yeah, I am skeptical too about how long these will stay intact.