Drawing is very much like hair.
Sometimes you’re having a bad hair day. You look like you just woke up from a nap on top of a puddle of glue and no matter what you do, you just can’t tame that weird thing sticking out from the top of your head. Other times you’re having a good hair day and you look great: no problem, no effort needed.
Same applies to drawing. Some days everything you sketch looks terrible, and some days you are on a roll and things come out really, really well.
As with hair, I haven’t found any pattern on what causes a good or bad drawing day. As far as I can tell it’s not based on rest nor lack of sleep. It’s not based on caffeine. It’s not based on anything but pure randomness.
Today I went down to AVAA for their Life Drawing workshop and I had (I think) a good drawing day. This is highly subjective; whenever I show my drawings to people, every person likes a different one or a different aspect than what I like. Of course, in a year I will hate them all as it seems to happen with very few exceptions.
Today’s two sketches are below: