I think you are on a good path towards an understanding of gesture. You could try to "upgrade" the primitives you use to indicate the masses with forms like they are used in this clip:
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that way you gain even more clarity and structure for your foundations.
Independently of that, I would also spend some time daily to train your line quality, just 5 to 10 minutes in warm-up to draw long, clean and precise lines, and smooth curves. That does not come automatically from training gesture, but it really ups the result. You can have perfect grasp on gesture and scritchy, scratchy lines, and the result will be carried by your good gesture and still look ok, but if you also has clean and determined line, it will start to look really stunning and get that pro vibe.