m0useanswered grow question 3y ago I like to use lst to make an even canopy or to redirect the vertical growth into a spiral like pattern on a horizontal plane.
One other option for LST is to separate the branches a bit so more air and light can get to them preventing shity little buds and rot. This is something I like to do to my outdoor plants a lot plus just gives them more room to bulk up and look massive.
Your LST so fair looks good. One thing to note is when your LSTing two main parts that connect into a [ V ] is that all the extra stress of the new LST branches can cause it to split. it is good not to force them so much, and if you do your LSTing before a watering the plant maybe a more more limp and have better flexibility to bend into the desired form.
Anything can be used to LST, I've used string to nets to hooks and more. The one thing I have yet to try are clips. they will redirect the growth for you and look kinda cool. a soft elbow curve of 90 degrees they can be found on amazon/ebay/alliexpress, some people really like them, I feel I would two if I bought them.
Best Of Luck!