Thanks! Honestly most people are more organised with the threads than me but I just make it up as I go along, seems to work out fine.
The bendy things are magnetic cable ties, I've got the excess fabric rolled up at the sides and these hold it all in place. Should definitely have a grime guard on it as well to protect it, but they're upstairs and I'm downstairs and you can see how this would be an impossible problem to solve.