These are a few of the textile designs I did in college. We used a program for jacquard looms that had a "live update" window, so you could do a simple design and tile it/put it in repeat, then make changes to hide the edges of the repeat and they would show instantly in the design. This was in 1997 or 98 so who knows what awesome stuff is out there now.
We used the program for woven designs too, oh that was head-smackingly complicated. Two of mine were eventually woven in mills as a one-off, one in linen, one in synthetics at a tie mill. I still have those somewhere...
I still haven't signed up for Spoonflower, must do that soon.