This is really cool. I like the idea. Depicts something new nicely. Especially with the words "NEW GENERATION" written right on the tube of marbles. The angle is great, I like how the marbles fill the whole photo. The reflecting light is a bit distracting. You could try to put a thin cloth or a thin paper between the subject and the reflecting light and it would help balence it out so it was more subtle. Love the colors too. Good luck with the challenge.
Overall, composition is not bad. However, there is too much clutter which is distracting. The good part is it's very colorful and has nice variety (jar, box, plastic bag, etc).
Busy, very busy. Very clear shot, maybe a bit dark in places. Suggestion: how about taking the marbles out, display them "in front" (and in focus), then have some of the better looking packages in the background, fuzzed out. Do you see your reflection in the front-most marbles (I like that part!), how about a "field full" of marbles all with your reflection on them? 7 Swash