Have you started your square research yet? I discovered so many lines in my photographic archives I’ve scheduled lots of ideas to help get you started.
There are long, short, straight and narrow lines in my collection as well as natural, wavy, and singular ones. Although interestingly not many stripes. The good news is that I have found whatever the line I have taken they nearly all fit easily into squares. Therefore I suspect you’ll find the line decision making process is as difficult as deciding what
not to buy in the outside lot at Brattle Books in Boston!