This was interesting but i like

~~REVIEW~~
Now this is a nice and simple image here, but it does need some "DETAIL" it can still have that "SIMPLE" feel but it does need a tad detail like say the cup it could totally have "COKE" along the side of it and all, or what you could do is make up your own logo of some sort, abit of design and some texture to the simple colors used and such would really bring this out, but still keep its simple side and feel to it, now the backround looks to me like this scene takes place at the movies so maybe some posters should be back in those empty slots or something along them lines, well you have a nice drawing here just needs abit of detail here and there nice work though

~~THINGS TO IMPROVE ON~~
A few details such as some added posters in the backround, maybe a soda logo on the soda and more depth to the colors more texture if you will

~X~