Thread magic is no harder than other magic you probably already do. People find it scary because of the fact it can break during performance.
In truth it is probably some of the strongest magic you can perform for people. The more you practice, the most you will be rewarded.
Michael Ammar "Easy to Master Thread Miracles 1-3" is an amazing place to get started.
It is really a full course on invisible thread. Its all taught in fantastic detail.