Remember that using ultra thin threads can be difficult because they are easy to break, so keep at it and try not to get too frustrated! Please feel free to leave questions or comments below and I will do my best to get back to you.
The more research with my macro lenses, and the more midge fishing I have done through the years, has taken me to one conclusion about 'matching the hatch' with midge. The insects are very slender, often times they are the size of the hook itself without any materials tied on at all! When I started tying my midge patterns with less body bulk, I began to catch more selective trout. All the reason you should try and tie your patterns with the smallest thread available.