This test ranks your creative achievement in comparison to others, which has a decent amount of correlation to your Big 5 Openness trait score.
Each of the ten sections is a rating of 0 to 7. Choose the highest rating that applies to you in each category. Add them up to get your total score. Rankings along with sample population comparisons at the bottom.
I got a 9, which puts me in the "Novice Creative" category.
Don't be surprised if you score low. The median is 0.
I made up the rankings, so if you don't like them, invent your own thing.
Test under spoiler: