You are right once the first pattern of the square is done the helpline will allow the pattern to appear easier. When I look at the colourful version due to two colours it makes our eye to see two shapes one is star shape and another a cross :)

By the way Jorge, I was wondering if you would like to create a digital art for the new competition that is run by @fijimermaid, provided you have time and if you like to. You are one of the best Artist on Steemit in both traditional art and digital.

https://steemit.com/hive-185836/@fijimermaid/crowdfunded-digital-art-competition-week-1