Two fashion pictures

It occured to me that fashion photographs are usually well posed and well lit, and could provide some subject matter for sketches. These two are based on ads found in the Sunday Times Style section.

This first one was done in pencil. I quite like the picture, although I have to admit the result does not bear a close likeness to model in the the original photograph...

For this one, I used oil pastels and experimented with smudging the lines to achieve shading and form.
Again, the result is not a good likeness of the model, but I think that in some aspects of the image - around the nose and the cheeks - the effect works quite well.