One of the cool things about knots is that there are usually several different ways to tie each one. The final product is the same, but how the tier gets there can change quite a bit. Here’s a great tutorial on how to tie the blood knot, in which Brian Flechsig of Mad River Outiffters explains each step in detail.
I dig the way he asks you to think about the blood knot as “two clinch knots jammed against each other.” That’s a smart way to visualize what you’re doing as you learn the knot. His technique for keeping the loop in the middle of the knot open is also ingenious.
So if you have struggled with tying the blood knot in the past, give Brian’s method a try. It just may be what you’ve been looking for and can set you on the path to creating strong, slim blood knots.