How many layers were used? From what I see, possibly c4d, grunges and a few stripe layers. IMO it seems only a few ranging from 5-8 at a max. They are dark but thats probably what your preferred style is. You also tend to like/incorporate borders, alot. Not every signature/tag is in need of a border, sometimes it even takes away from it. To me they are very boring, not much is going on. The lighting is too similar throughout, as well there are alot of negative space which isnt used as secondary. As well the planes are all too similar, it doesnt stand out. Keep in mind, the smallest detail change can be the most important such as lighting, burns and etc. For lighting example, take for example Apeguys third signature.