Can someone please help me, I am trying to make some patches to go on some shirts, I worked out how to make the design through my 6d software, now when I sew them out there is a great mess at the back, I am using bobbin thread in the bobbin, 2 layers of medium weight cut away stabilizer, I know the mess is not going to be seen when they are sewn on the shirts, but I don't think it is suppose to look like that !!!

If you have a Viking emb machine, try turning off the auto cut for jump stitches. If you have a lot of thread changes those cut threads on the back can cause a mess.

If the problem is on the back, it usually means that it's a bobbin problem. Make sure that the bobbin area is free of lint/threads. I recently did not put my bobbin in properly and had the same problem too. However, my upper tension is causing problems on the backside of my embroidery. So it's best to check that too. If my upper tension is too loose, I get thread nests on the back.