For someone artistically challenged as I. I like my patterns to be life size, but I know that this may not be always possible. A cut line pattern would work where the user can connect A to A and B to B, if you get what I am trying to convene. I have patterns or ideas that I have drawn up on a piece of paper, but since i have to see a life size, I have not tackled it. If I have it has failed for me. I know, I know. But for me, I am totally a kinetically type of person. I was give a full CAD program, but that is another area that I lack abilities. I could not get the program even with with some hands on instruction. I ended up returning the program.
I wish you luck though. I hope it works out because in the US, we definitely lack up to date patterns for all kinds of personal items minus chaps, bracers, etc.