The The Good The Bad The Rick tee design is for the Rick and Morty fans and anyone who likes or gets the "The Good, The Bad, The Ugly" reference as well.
This concept is a parody of "The Good, The Bad, The Ugly" only with the good Morty, the evil eye patch wearing self hating Morty and Rick in the segmented panels. The concept is probably done elsewhere but this one has simplicity which makes it a good pick.
As for the artwork, while the layout is derivative, the art features straight cartoon rips of the character's faces on a different board shapes with no wood grain. The coloring is a monochromatic orange theme which gives it a sunset feel and adds to the Western motif which is the point. The shading is consistent as each panel's light source is the same which isn't the case for all The Good The Bad The Ugly parodies or even the original poster art. The tee can be stands out easily from a good distance without missing any detail which makes it a great tee to be out.
Wear this tee to a Comic-Con or to the store because Rick and Morty is awesome.