Absolutely beautiful colours...and a good use of the triptych license, even down to the opposed curves of the spines on the two edge panels. Also, it's nicer that you didn't just use the same leaf and 'shop the colours. Good luck!
Excellent color contrasts. Not sure I like the veins all centered in each pane, but at least they are purposefully arranged, and serve to create a single image, rather than each competing for the viewer's attention.