After seeing my Scarlet Witch, a coworker suggested I look up Sofia Vergara. In the process of googling I stumbled upon Arianny Celeste. Which was the reference for this.
Shadows and hilights make a drawing, or as my art professor had said "lights and darks". From one artist to another, I'd sugst practicing that philosophy. You'll impress yourself quite a bit when you get it down.
Yup, nice drawing. You keep getting better. I agree with Pij that the mouth is misaligned (and I think it's that, not the nose). I also think her (screen) left eye looks a tad bulging, as does her cheek. The latter's probably just because of the 3/4 view... maybe sketch in some shadows on that side to bring out her cheekbones?