Approaching 30 myself and it seems like most decisions I make fall somewhere between ? and !
Nothing profound, just an abstract visual scale for mistakes with little consequences to those with major consequences. I chose colors that remind me of a superhero to represent an anti-hero in this concept.
This was only kept up for one day due to mistakenly being submitted to Threadless as a general design. I tried to get 'em to switch immediately after, but it took a while. The shirt was only up for 24 hrs and I didn't even get to vote on it. Anyhow, hope you like it for the contest.
Nothing profound, just an abstract visual scale for mistakes with little consequences to those with major consequences. I chose colors that remind me of a superhero to represent an anti-hero in this concept.