Hi there!
This is one of my practices with colors that I like to do regularly... it's great to have time for this type of exercise although sometimes I spend too many hours in them... anyway I do not know if there is a "measure" for how much a drawing may be fine and you can say "ok now it's perfect" to give it as completed. The idea for the drawing came from an old meme (these things seem to never get old in fact) As usual I share with you a animated gif with the process I used (if anyone is curious)... I am planning for the next posts to create a video with process on DTube but for this I need to organize the chaos that is my day... I hope you enjoyed and have a nice week!!
Check out my gif process:
Thanks!