It's good you ask, I'm glad you like my works. I am ok, draw how much you want - as long as it is not purposed for commercial usage it is ok. Please, credit the original picture and share the result with me! best wishes!
my photos are not destined to be stock photos, they cannot be used unless you want to use it as cover or feature somewhere - then contact me. you can also use them if you want to draw/paint, but only in non-commercial project.