I'm trying to clean my page a bit, so please, don't thank me for llamas/faves/watches, you deserve it!
It usually takes me some time - I have 1 month for each commission but usually I'm doing these much faster, in something about 1 - 2 weeks. I prefer to not work on whole art at once, I like to make breaks and think about the piece a bit, so it's easier to fix mistakes later etc. And I... just draw. Sometimes it takes 5 hours, sometimes 12 - it depends on the character design, pose and others. I think that experience really matters when it comes to amount of time spent on drawing ^^ Also - I don't post my drawings immediately after finishing it. Some arts was made 1 - 2 weeks before posting it, so when I post 2 - 3 drawings per day in a row it doesn't mean that I finished them all at once. So regarding that I think it's not a "short amount" of time. Like I said, it depends on the situation c: