i'm working on illustrations for a book and really need to use the exact page spread at 300dpi. However, there doesn't seem to be a way to create a custom canvas size within sketch. Is there some sort of workaround for this? I'd like to keep using sketch for it's awesome creative cloud integration. Thanks!
There is not a workaround (not that I know of) but... I'm told that custom canvas sizes will be coming to an update this summer.
I know that doesn't help you right now, but choosing a canvas size will be possible soon.