@shikisoku Thank you! To make my knots straighter, I tie the knot by holding the string I'm knotting on straight down and pulling the string I'm knotting with straight up. Then when the knot is finished, I pull the strings straight out to each side. It seems to "square up" the knot. If you try this, let me know if it helps!
@Kraf_T_0ne I had to go see your photo - love the blue background you chose, and I'm amazed at how perfect your edges are! I really enjoyed trying @hippyfish 's retro color scheme, since I usually go for rainbows and bright saturated colors.