I managed to fix most of the big problems but I'm having a lot of trouble with the arm of the sofa. It's still really distorted. I'm not sure if it's because I haven't mapped out the UVs correctly or if it's the geometry but here's what it looks like at the moment:
That's the same sort of problem I keep having with other parts of the sofa too.
Other than that I'm pretty chuffed with how it's going. More tomorrow! :)