Sourov is very quick to provide any change to the design once requested, with no hesitation or questions. The only fault I had was that if I did not respond immediately, I would get follow up messages and sad emoji's which I did not find very professional; especially given that I had already explained that we were in different timezones.
Sourov doesn't pressure you at all, he is very professional and easy to talk to. he did many changes I asked for, and was very clear throughout the way. also, he is a very nice person in general, highly recommend workin with him.