The shots look relatively well exposed (my guess is ETTL was working for you). But I'm not really a fan of the shadows being created by the bare speedlight. Typically speaking, light coming from a window (which your shot sort-of mimics) would present a much larger lightsource than what is indicated by the shadows in your shot. A softbox, umbrella, or bedsheet might have been used as a diffusion material or as a material to bounce light off of. This would increase the size of the lightsource relative to your subject and turn those hard-edged shadows into much more pleasing gradients.

Unless you're wanting to recreate a hard-edged look, I'd avoid using bare light sources as my mainlight. You're much more likely to get away with them when used as a rim/hairlight.