I was umming and ahhing about whether to take it down a bit more, in all honesty for that reason, but as per usual, the photos dont do it justice. The proportions do look right and the taper is so much more obvious in person. I was hoping for closer to a 3 or 4 foot tree in the end though so maybe I just misunderstood your first post! There is a bud just above where that shadow lies though so maybe that’s a good point to take it down to. It’s a shame the shadow isn’t a branch though because that would give it the movement that section needs! I’ll go outside and stare at a stick in a pot some more I think.I took a second look, one of the heavy branches turns out to be shadow, your branches are not as heavy as I thought. However, I usually plan my trees out in thirds. My eye was treating what you collected as the first third of the finished tree. So at 24 inches, I could see this finished at nearly 6 feet. Fist third is trunk, second third is main branches, final third is only secondary and tertiary branches and leaves. I would bring the central trunk down a bit if you want to keep it under 4 feet tall.
But the above is my taste, it doesn't have to be yours.