Pretty standard fair for C4D graphics. More dynamic lighting, better post-processing effects. Photoshop is what makes a C4D signature go from really bad to boring. I am sort of biased against C4D as I am more old-guard, so in my opinion I would say scrap the idea of making 3D text and work on traditional signatures, unless of course you're going to use C4D to actually model stuff then I say go for that.
Also this isn't really a logo. It could be used as a logo but it'd be a pretty shitty logo. I'd suggest learning about branding, logos, and marketing if you're going to take graphic designing seriously.