It all comes down to this.
1. Commitment to the fall line. Always moving downhill.
2. Confidence. In a lot of ways more important then sophisticated skills.
3. Control. Skill, technique, could be "competence" instead - but Control speaks more to the heart of the matter.
I often wonder what is holding me back from becoming an expert skier (don't ask what that means to me - but I know, and it has a lot to do with surface conditions.)
Yes I do need to work on certain skills for Control. One footed skiing and pivot slips in particular. They will enhance my turn initiation greatly when mastered more.
But the reality is that what holds me back isn't my skill. I have the skill to ski most things I come across. I just don't always have the nerve, the drive. The John Madden "IN YOUR FACE!! TASTES GREAT!! LESS FILLING!" (thanks to Toonsie for this.)
There are lots of skiers without very sophisticated skills who can ski in many ways better then I can, as far as getting down things I avoid or pick my way down.
At my age I need more of #3 to Control my speed through turn shape so I don't lose #1 and #2, but I probably need more of a commitment to #1 then anything else.