i don't like to rate people but looks like you have the basics down, try to blend your render in a little, they stick out quite a bit and when using c4d's try to use them in some type of flow, not just random. but overall not bad keep it up and youll do great
Keep it up. Your renders DO stand out quite a bit, and I suggest, for now, maybe don't put text in your sigs? Work on getting text right after you've got the basics perfected, because all of those have pretty stand-outish bland text. The second one on the whole list is by far more ahead of the rest.