you really need a better presentation of your work. anyway, this need highlight and shadow, it has no depth.
the background shouldn't be outlining the apple, it should looks softer. the giant name and title in the corner is distracting. this has no shadow. if the light is in the upper left corner, then the shadow would be on the other side, not straight underneath. the shadow may be up the wall a little bit, this is what makes things look 3d.
i wouldn't put the girl on the fold, i would put her above it. the umbrella on the right is distracting. you need shadows for all these pieces. she has no shadows, shading or depth. its more like a photo shoot for a cartoon character. while you have lights set up, they aren't doing anything. the room would be a little dimmer and those lights should be on. she could use some color.
your handwriting could use some work here, it's out of place with the drawing. the light coming onto the glass, and the highlight on the shadow, are in different places. the glass would look darker towards the outer edges and the two centers would have a lighter gradient towards the center. i'm not sure what the background is, but if the white parts are light, they are coming from all directions. the perspective of the glass, doesn't really match the shadow. at this angle i think it would still be pretty much the same shape. the rim of the glass should be highlighted.
---Mike Savad
MikeSavad.com