Nothing in particular, but if you're into it, I'd love to get an inside peek in the type of illustrations that's popular these days everywhere: namely "grunge". But it's really not a priority, anything, really, anything would be helpful.
p.s.: Thanks, man. Greatly respect people that help the community. Kudos!
p.p.s.: Btw, regarding the tutorial for glossy gradient effects. A sidenote: have you ever used the knife tool to slice shapes and apply gradients to them? I find it supereasy to add the "3D" look to flat illustrations (even larger groups of shapes). Just starting out, testing it, but it seems really effective.