Hey there!
I don’t have a Russian background, but if you provide me with some references of the illustration style you like, I could easily apply it. How many illustrations will you be needing in total? My process would be to do this by hand then digitize it, I would first provide you with some rough sketches for you to approve of then commence in on the detailing and coloring - If you initiate the chat I can send you some *watermarked* samples not available in my profile
Anyway, I could start working on this right now, just let me know!
Cheers!
Don't forget to check out my profile for examples of my work and my feedback
https://www.freelancer.com/u/certaintly.html