Twilight Sparkle

She looks like she's 1000lbs. Try to work at lineart and shading, because this light isn't properly enough. Try to do more of it under her mane and wings. If you're adding blue light try to shade with blue. Luminosity in SAI is not enough.
Her less visible eye is too bright in my opinion. Mane underneath should be more dark than there and shading on her skin is much much too bright under her piece of hair in front of her face.