My sewing room, being the converted loft has the majority of walls sloped and it's a bit of a problem at times but it's so big I'm not complaining!!
The stairhead and banisters around the stairs have been covered by my DH so I have a very large surface which I use for cutting out, assembling - well everything really.
I would post a pic but the state of it is not something I willingly admit to
Hey, I'm creative and I don't have to put anything away!!
It may look a mess but I know where everything is - well, roughly