i draw with pencils and pens,so to me if i understand correctly,this is digital (computer) work mayby im just jealous but i dont get it cool landscapes though,i would proboly call it computer work rather than sketches.
Thanks! To be honest fast can be relative. I try to keep those under 90 minutes .. sometimes its all comes together even faster, sometimes the idea need some more development and its 1-2 hours more. Try to do those as often as I can , without overthinking them.