Lettering is 'the act, art or process of inscribing or writing words on something'. And it is also just awesome. If you create your own or find awesome ones out in the wild, throw them up and let it be ridiculed or revered!
/r/photography is a place to discuss the tools, technique and culture of photography. This is not a good place to simply share cool photos or promote your work, but rather a place to discuss photography as an art and post things that would be of interest to other photographers.