Ok great, I'll make that change and see if that fixes it.

Oh yes that did help a bit. It seems like its generally better to take it in from the side seams when possible instead of the center back seam. It wasn't much of a problem for me on the waistcoat, but I think it will be more difficult on the jacket, once I have that ready for fitting.

Thanks for the advice again. So after the fitting, I got a little excited and moved right on to ripping and remarking before seeing your reply. I think that the front edges are probably fine at the neck, but I decided to take them in 1/4". I dropped the shoulder point on my right shoulder 1/4" total, but left my left shoulder as is. Anyways, we'll see how it turns out once I sew it up. I'm feeling good about the fit, but I'm sure I'll have some small changes to make for the next one I make. One question. When you say square the shoulders, does that refer to my shoulder slope, or the curve of the armhole? If I were to square them 1/4" like you were saying, where would I make that change?

Thank you for the excellent advice Jeroen! Yes, I did drop the neck and and shoulder points 3/8" I think I know what caused the pooling in the back of the neck. When Rory drafted the pattern in the video series, he took off i think 3/8" or so at the center back neck because he has a forward head posture. I did the same because I thought my posture was similar, but I don't think I should have. Anyways, I followed your advice and raised the shoulder points for my higher right shoulder. I also added about 1/4" to the front at the shoulder ( I would have done 1/2", but was running out of inlay after raising the right shoulder). I also lowered the back neck 1/2". Then I took it in the lining at the sides and a little from the center back, and I'm happy now with how it fits in the waist. I also added 1/2" to the length, taking it out of the hem. Here are some photos of the corrections. Overall, it's looking much better. I think I will redraw the curve at the back of. the neck, so that it is a little lower in the center back neck, and curves more to meet the shoulder point. The one last thing I'm wondering about is how the front edges are still close to my neck, so maybe I will just reshape that part slightly, taking in 3"8 or so from the front edge. Thank you for the great advice!

Could you link to that interview please?