/3/ - 3DCG

>>956275
>If it's not a cylinder or a cube then I'm fucked.
Well you're in luck, 99% of all unwrapping is a variation on a cylinder, cube, and sphere. Figure out how to do that and you can unwrap anything, as it's all just a combo of those things. The trick for me isn't to think of seams as seams, they're cuts. Where would you cut the model with scissors to lay it down flat?
As for your model, I really don't know why you have seams there at all. A torus is still just a cylinder, just bent into itself. Like a cylinder, you just need a seam down one of the edges, and on the top and bottom. Since a torus is a ring though, there's no top/bottom, so any ring will do.
Pic related is an example of what I mean, with the basic unwrap next to them, and a "follow active quads" next to those. The second example is there to show that you can break up a longer island by adding a seam to the middle of it, which will break it up into smaller parts that will hopefully take up a larger area in the UV view.
The smaller ring you have wrapped around the larger one would still be unwrapped the same way as the larger one. It's still just a torus, just a lower poly one. A single seam down the middle (probably on the back side so it's not visible), and a single seam around one of the edge rings.