Hi,
Your tree is looking good and am almost tempted to see if I can add that as well to my set up (or it may be a bridge to far)..
What type of strings did you use (ie did you use the square type nodes or the traditional ones ?) and do you have a link to them ?
I used rays 50 pixel strings, with black wire, resin filled 12v. I'll link later as I am on my phone. Regular nudes, not the square and I've cable tied each one flat onto the wire I used for the structure.
Got 41 ups and downs combined.
25 pixel per up or down.
200mm top diameter and 1500mm base diameter. Height between rings is about 2.3m.