How to "3D",,,?

Here's some more things I've been working on (finally got my tablet working). The White block in the first pic was just something I used to help with sizing, the block represents an adult character (though the actual character will be a lot smaller probably). Also figured out how to get the unity importing work (thanks Dr.Electro, though I used a slightly different method that seemed to work).

I've noticed that I really enjoy flat shading, but I'm sure once I sit down and figure out the smooth shading (with sharp(?) edges) it'll work just fine too.