sorry, but i don't like it, and i 'm not about to lie and say i do in order to please everyone.
i guess someone could pipe up with "if you can't think of anything good to say, then don't say anything at all"... but what's the point in that, it hasn't enhanced anything.
Practicing rendering? you need more practice in that case. The shadowing just looks noisy... you need to increase your sample rate.
Also, if you're practicing rendering, generally its a good idea to have a few effects, such as translucancy, reflection, refraction, opacity, particle effects, depth of field, motion blur, creative lighting, volumetric fog, space warping etc... you know... the sort of thing that shows off your rendering skills.
The only thing i like is the sky, and that looks a bit flat to me.
the bomb itself... now... i don't know if it's just the angle, and a trick of perspective, but the apple sign on the tail is horribly stretched. You really should have actually modelled the apple logo, and then made a material with the same properties as the apple logo uses in real life.
well, i'll probably get a newbie slap now, or just generally vilified, but you did ask what i thought.
Manic
I don't have a sig, live with it.