you have 1 think which most beginners dont have-a sense of flow. that makes these tags at least decent.
now, the first thing is the quality. u seemed to have blurred it up around the focal. never do that. if anything, i suggest sharpening it.
your use of fractals is decent, but needs a lot of work. one thing you can do is make the size smaller becuz the tag is so simple. i also dont like that b&w stuff.
for now, just dont even put text until u get better. it kind of ruins the tag. also, use real renders. these seem to be pics that you cut out or something =/
overall, i like where you are going. flow is nice, jut pay more attention to the colors u use. it matters a lot O.O also, you might want to start adding c4d's, brushes, etc. as of now, these are too simple to be called tags.