Hey Ben I been going through same learner curve since same time. Can't wait for summer as averaging about 1-2 days a week and feel like I'm going backwards in more ways than one.
Like what Yacka said, Sheet out, I was getting blown down wind and felt no control then after a couple of hairy runs doing the poo-stance, I remembered that I had a depower line

after that I realized that I had had way too much backline pulled in. Instantly started making ground easy and felt really comfortable and my stance instantly improved.
I'm starting to think that a good stance is as much a result of a good awareness of the trim required on the kite, as it is focus on feet and hips and direction but I'll leave that call to the more experienced here.
I need heaps more practice , come on wind!