Sketch Mucha Style

I was studing Mucha's Sketches and was quiet inspired. And I wanted to try his style, his perfect play with shadows. I took his sketch for panneau decoratif, one of my favourite and transformed it a little.
Hope I did it well.

I think Mucha's drawings look like 3 D models because of his way of drawing shadows. So I'd like to continue studing his drawings to learn how to draw that beautiful