I don't know how those 3D programs work, but for a beginner... I think it's okay. Maybe the shadow of that object (glass or how is it called...) is a little wrong, I think it should be more darker and a little bit UNDER the object (and also a little bit smaller). And by the way, maybe you can also add longer-circle shadows for those molecules :P

Whoooow.... The high-resolution is far out of its quality... Maybe you should ask (if you don't know) how to make it with high quality...

Great 1st try...good luck author

Nice

good entry

Good.

gud work...

I like it you done good

nice