What's the trick? Mine always look "flat"! I did a dirt bike this weekend and it looks like it has flat tires. I've seen pics where they don't look flat at all, but I don't know what the trick is.

When you say flat, do you mean deflated on the bottom? Like someone let the air out? I made some tires last month for a car cake, and what I did was get out a circle cutter in the size of the tire diameter I needed, then filled the cutter about 1 inch thick with fondant/gumpaste mixture, smoothed, then placed on a flat surface to dry and removed the cutter. It was perfectly round, but needed a few days to dry enough to maintain its shape.

That is exactly what I mean! Good thinking. I will try that out next time.

I think part of my problem when it comes to any figurine is that I wait till about two days before the cake is due to make it, when I know I should be letting them dry longer than that!

Two days is fine, TBH I make everything 1 day before. Just pop it in the oven overnight with the oven light off (no heat!!) and it dries in a jiffy!

Not sure what kind of cake you made, but I use donuts and cover them in fondant, they always look cute plus customers love that it's not just fondant.

If you get them dry first before sticking them on, then they look like flat tires!!!!! Ask me how i know!!!