drawing people
This is actually one of my least favourite of your works, though I quite like the concept. The snowy futuristic city looks quite nice, though some of the painted elements don't seem to mesh if I zoom-in. The trouble is the drawing of the girl - first of all, the body proportions are very off. The part of the arm that's reaching out is too long after the elbow, the bulge for the left knee is way too high up in her cloak, and the location of the waist is unclear. Also, her face is a poorly-done imitation of a typical manga face, with a triangular eye, jagged nose and non-existent chin. This is obviously a weak spot that you have, and since you're so strong in many other areas (colour, composition), I think it's one that you should focus on. Try drawing people from real life, not just copying manga drawings, and you'll be able to develop your own ways of drawing them...