Here's a twill sampler threaded five different ways. It is cool how each section looks different based on the different threading even though the weaving pattern is the same on each horizontal row. This is a great way to test multiple patterns at the same time. I really like the middle block.
I used 3/2 pearle cotton for both the warp and weft. The set is 15 ends per inch. If you are going to do a multi sample like this, make sure you don't have two warp strands next to each other on the same shaft to avoid floats. I had to rethread the last section because the second to last pattern ended on a 1 and the last started on a 1. When I rethreaded, I started the last on a 2 and let the sections share the 1.