I'm a firm believer in modifying patterns. If I don't like the way something looks or if I prefer a different method, I make the necessary changes. It's no big deal. What's the worst that can happen? If it doesn't work, I can always rip it out.
Sometimes I plot out my modifications. Sometimes I make them on the fly. Plotting and planning often requires math, and that's what I did for my Nakarra Wrap.
Instead of using a full skein and a gradient set, I had the bright idea of using two gradient sets. That led to calculations about yardage and number of repeats. I finished my first section with yardage to spare. I still don't know how this will actually look, but my numbers worked. It's time to switch colors, and I'm optimistic.