For everybody's information, those are levels of mastery in making those kind of images:
Level 1: Drawing a rectangle over part of eyes of a cirno on an existing image
Level 2: Being able to draw a rectangle over parts of eyes of multiple cirnos on an existing image
Level 3: Being able to draw a diagonal rectangle, making it more fancy etc.
Level 4: Drawing a whole new cirno and putting a rectangle over part of her eyes
Level 5: Drawing a rectangle first, then cirno
Everything beyond that is a sign of the true master of the art
>>1949168I am actually on Level 2 and I am using the mspaint, the basic rectangle tool. I know, I am not very skilled, but I am determined!