These T-shirt designs were originally made by someone else - I was given them as basic sketches/logos to make into a usable print.

The 'This is my T-shirt, there are many like it' design was made to be similar to many other T-shirts by using the typical Helvetica bold Font with Kerning adjusted - so it does appear the same as many others.
The only distinguishing feature being the slogan and the fact it belongs to you...

The slogan is derived from a quote in the film "Full Metal Jacket"