Yeah you only "LST'd" (though I'd call this HST) about 18 inches too late. LST is an early >90 degree bend that leads into a gradual up slope as it travels the lids perimeter. What you have there looks more like a desperate attempt at avoiding touching the weak light that got your plant to stretch like that, thankfully your stem's so weak you could accomplish such a feat. Also, sewing thread will slice into the plant tissue under even a little pressure. You're much better off with thin nylon rope (like triellis netting thin) or insulated wire - dead headphones are a great source for that.

Anyways, I hope nobody dies using your method, in all likelyhood it'll just be their plants.

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