I really like this picture. The lines, composition and lighting all work really well together. On another note, the model is doing a great job for (you) the photographer by creating lines, shadows and edges for you to work with.
I really love the composition, how the model is posing, the soft lowering of her glance, the hair so impeccable and the tiara piece gives it a simply magical glow. The eye make up is the detail that caught my attention though - intense, and yet, with the context of the whole picture it just gives her power and a especially a power of attraction
All around, nice job