If you read the rules for QB swaps, it states that any work is to be accepted gracefully.
In a swap, everyone interprets the rules by their own guidelines. Some people are very precise while others are less so. Some people have perfect 1/4" seams and others - - - not so much. Some people send 12 1/2" blocks out while others don't appear to measure their final work.
Yet, the experience of a swap is interesting. My favorite one was the boomerang swap and it was amazing how everyone took YOUR piece of fabric and made something with it. SOOOOO much fun.
One of the challenges is to take all of the different blocks and put them together in a top. I can tell you that it is a great learning experience.
It is also easy to get caught up in SWAP mode and suddenly, there are a gazillion blocks to sew. lol (speaking from experience).