I'm working on a horizontal sidescrolling shooter. Everything looks so flat, except for the background which is using 3D boxes, particle smoke effects, and the explosions. That leaves the actual sprites that represent vehicles in the game's world which the player looks at the most...
What can I do to give them a more dynamic look? I can't tell if a subtle skew addition would help anything, but it seems the most promising. I'm kind of avoiding bump/height mapping, for one reason or another, partially because I can't get the lighting to cast quite right. Lighting would sure make things better, I bet, but how does one go about adding a light that can cast on to the bump map? The lighting object?
Anyway, I want to know your mimicry of 3D secrets.