How long does it take you to sprite?

[Cobalt Blue]

i've spent days working nonstop on stuff i feel an urge to do, while i could spend around an hour or way less when i'm not that motivated. lately, it varies on the motivation i have to do something. i doubt there something like a fixed amount of time i normally spend on something i want to do. though if a time limit exist, i'd try to finish it as quickly as posible.