Alright, just got back from Cypress Mountain near Vancouver BC.
Here is what I tried and the results:
1) Developed a feel for a 60-40 weight distribution on flat ground in order to try to reproduce it on the slope.
2) Grabbed my pants at the front knee while on the slope. This helped a lot in keeping my weight centered or forward (but I still leaned backwards on a steeper green; more on that later)
3) Did toe-side falling leaves as Snowolf suggested on the top (steeper) part of the run. I definitely need more time on the toe-edge. Feet start to burn very quickly.
4) On the middle of the run I did heel-side garlands
5) On the lower part of the run, I linked turns. After two goes like this, I was able to link turns from the top of the run!
After the lunch break, my fiance and I went on a steeper green run. I had some challenges here. The run is very narrow (Panorama @ Cypress) so I had difficulty making toeside turns because I was afraid of falling off the side of the run! I also had more trouble keeping my weight forward/centered because the is steeper than the "Easy Rider" run I was doing before. Also, Panorama was much icier due to the higher traffic.
Plan of action: Next week I'll be back on Easy Rider for one run because I believe the challenge on Panorama should make Easy Rider a confident run for me, allowing me to reinforce my learning. After that, I'll go back on Panorama and try to get used to the increased steepness and speed.
Perhaps you're still mentally freaking out about the idea of leaning down towards the base of the hill? It's fairly normal at first, but it's something you'll need to psych yourself out of. I was hoping the tip I gave you about holding your pants/knee while riding would help keep you from thinking about it, so you could focus on your progression & just get comfortable with the position. When you notice yourself getting in the backseat while holding your pants, try grabbing a little further down your leg, or even over your knee cap if needed.
Consider incorporating calf raises into your workout to strengthen them - just give yourself a few days between doing them and riding or your calves will be killing you - especially if you're not used to this exercise. If your heel is lifting in your boots, consider putting j-bars in to hold your heel in place. If your boots are way too big, consider buying another pair in the right size.
That's awesome that you're linking turns down the whole run!!! I'd suggest working on your toe side falling leaf to strengthen that ability & build more confidence in your toe side. If you're having issues turning toe side or holding the leaf toe side, you may want to look up the mountain, as it should cause you to naturally turn a little easier (this should be done as you start to turn toe-side to help complete the turn).
Now that you're successfully linking turns from the top of the run to the bottom, I suggest continuing to do so & consider an easier blue run to try linking turns on. Successful or not here, go back to a green you feel comfortable on & practice some more. When you feel comfortable after a few runs, consider trying an easier blue again, the same or another.
Congrats on the progress so far! Now you just need to practice as much as you can to develop some muscle memory for the rest of this season & the start of next
As far as steering with your shoulder...riding with open shoulders is a really bad habit. Consider steering with your foot & knee. It will hopefully prevent you from developing some bad riding habits that will be difficult to break later down the line