Nice work! I just got a string jig and a couple spools of B50 also. The first couple I made were ugly, but I watched some youtube videos and saw that I was making a mistake in my process. Now that I have that corrected I am happy with the way they are coming out. But I don't think I really need 5 sets of backup strings for my bow. My favorite so far is a 5x3 with 2 whites and one blue. It came out very well rounded and you see less twists even though they are there. I've been stretching mine on my draw board next to the fire with good luck. I just tighten it down until there is more tension than when it is strung on the bow and call it good for the night.