The effects you used are just way too random, and messy. Clean it up, find the flow of the stock and work with that.
darken it up some in certain areas to make it pop more, work on effects, and the focal could be changed.
like find the general direction that the stock is "moving" like is it leaning diagonally left or right, and use your c4d or brushing to match the way the stock is going, instead of having the yellow c4d curve up it should be more rounded facing more of the top left corner instead of up and if you need help in blending we have a whole resource thread if ya didnt see mate
It's exactly what Virtuoso said. Check out our Resource Thread as well man, in the pinned topics. There are quite a few tutorials there as well as other goodies. But you should try and check out tutorials a little more, you'll learn new techniques and styles, it doesn't mean just follow tuts, that never works out. Use to the tuts as a guide to learn new techniques, tricks, style then adapt it into your own.