well from what i seen, it looks like you were blurring stuff which doesnt make stuff look good, and using oranges that made it look one solid color, theres more than one color to the orange, white,brown yellow etc.. and it also loooks like you used a pencil tool, which made stuff jagged. so i used a lower opacity & flow to make it smooth.
also with your wings you made them flat and smooth into a shape like if it was perfect, when i looked at your reference i didnt see perfect edged wings, its un-natural looking. i dont use lascaux, so im sure other people know other techniques, i find lascaux harder to paint with.

Ok. Thank you. I'll try messing with a few of these things. Oekaki is a bit weird for me. I like the zoom tool.