Theyre not bad for your first ones, spec with c4d. The thing about c4d that will really help your signature/tags stand out is to have it on different planes such as in front and some in the back to create spatial areas. IMO never put your main/direct image in the center as it draws from the focal points (the main area which the viewers eyes are dragged to). The text doesnt stand out to well either. Always use contrasting colors to bring out the best in both colors. There is TOO MUCH red going on. Also work on the lighting, ie burn tool and etc.
In general play around, but as well use more layers as itll help bring out more in you.