Great job!
Oleksandr carefully and responsibly evaluated the technical assignment, reviewed all provided references, gave advice on text correction, thought ahead about what materials might be needed. And as a result, he very accurately conveyed everything in the video. During the process, he showed an intermediate result.
He was very patient with comments and made changes. He always responded quite quickly, communicated politely and respectfully.
If necessary, I will definitely contact him again.