Andrey Chadin is ready for certificate

Andrey, Hi!

Thanks for your persistence - and your funny "code-unrelated" comments in your solutions :) Your certificate is ready at your profile - congratulations!

I'm open for suggestions:D

Judging by your code and approach to it, I dare to think you can make very success career as developer. But general "next step" on this path is to get employed at some good IT company as nothing can substitute all the "training" one could get from professional teammates, large projects and industrial processes. It is most probably even easier nowadays as many companies allow remote work since spring. One of the companies I can recommend for C# developer is DataArt (longest stay in my own career).

However it is quite probable (judging by your VK page) you are well pleased with your occupation as Light Designer and this may be less dull than developing some silly enterprise code :) So perhaps it may be better to leave programming as a hobby!