I tell my students that they are not allowed to compare their artwork to someone else’s in the class. Comparing is the easiest way to kill motivation and success because you will always find the victories in their artwork and compare it to the problems in yours.
Your eyes are like magnifying glasses to the smallest of mistakes in your painting. You will find yourself liking one part of your painting and hating another part. I have seen this scenario play out on many occasions where someone will compliment a classmate’s painting and that person will automatically show them the negative aspects of their painting. They will respond, “It’s ok, but I really don’t like this spot over here.”
Comparing will blind you to the successes you have won while painting. Each painting is another step to learning.