Improve your shibari by Self-tying practice (Patreon)

You can work on your technique for 15 min a day and improve it little by little. Try a game with yourself. Do one-two things every day and build them up. For example, first day you only do a single column tie, but do it 15 times, and the last couple of times you do it with closed eyes. Next day you revise single column and then do a ladder tie, practice it for a couple of times. 

Day 3 - 1 single column,  ladder and one more knot. 

you can easily do these for training:

single column tie

double column tie

Somerville bowline

Ladder tie on your legs

Futomomos (practice nodomes there a lot)

Variations of ties for meditation - the one I am showing on the video - single column on your feet and then waist rope

Slow and steady untying of wraps

Karada

Double coin knot (pretzel knot)

Basic hip harness