We have a huge Weeping Mulberry tree, it's a gorgeous tree, we love the small mulberries but so do the birds.
The fallen leaves didn't have much colour variance, pretty much all gold with the occasional brown, it looked a bit washed out, so I added some interest.
Fallen dry leaves have a more 3-dimensional character. I like the way you have "revived" them by gently injecting colour and turned this piece into art. Looks great on black. A fav for me! :-)
