I'm a musician and a YouTuber. I make my own designs as "merch" for my music and YouTube channel, as well as recreate shirts (usually from scratch in Photoshop. Getting things perfect is hard!) that I really like from the musicians who have been influential to me. If you're here from my channel, chances are good we share those influences.
So, the shirt recreations I have posted are for you to have and wear and make your friends jealous.