The Multiverse Wars tee design is for the Rick and Morty and Star Wars fans.
The concept is like half parody and half mashup. In this, 6 of the Rick and Morty characters are spoofing the Star Wars episode 4: A New Hope movie poster (shown below). Rick Sanchez is holding up a beer with a lightsaberesque glow coming from it while Morty is wielding Rick's Laser Gun. Summer, Jerry and Beth are replacing the Droids in the background. Mr. Meeseeks is the shadowy face in space instead of Darth Vader's trademarked helmet. The location is like some effed up dimension in time and space that Rick and Morty go to at some point or another rather than a Star Wars location.
As for the artwork, it is good. The colors are just like they are in the cartoon and the shading is well, better than the actual cartoon.
This Multiverse Wars tee will make a nice gift for the Rick and Morty fans. Even some Star Wars fans would appreciate it.
Like most of the designs on this site, it would make a great Comic-Con shirt.