Loved the tips! I found the drawing without any depth, but I do not know what it was... Thank you tanuki =)
Nice drawing. It looks like you worked hard on this. I think your light source could be better though. I see highlights on her left shoulder, the right side of her right breast, the back of her hair, etc. Try picking just one direction for the light to be coming from.
Not bad.
I think it's flat/lacks debth because of the color choice and lightsource. Try shifting hues, it'll definitely help your future pieces!