You need tons of improvement. - Increase the size of your render a little bit and slightly raise it up, it's located a little too downward. - The background and the render should blend together. - Also blend the C4D's and you should choose the right ones so that you could create a flow. If the C4D's do not correspond to the color of your background and render, then just change it using color balance or hue and saturation. - The neon blue effects in the render are weird. - Change the font and blend it as well. - Decrease the size of your canvas.
As RaBBiiTTT said, there needs to be a lot of improvement. 1. The background does not in any way match the render. When you work with a render, you have to make sure that the background that you choose or create matches the coloring and lighting of the render, and that it looks somewhat natural. 2. The C4D is awful by itself, but it also doesn't fit in with the flow or color of the sig, as RaBBiiTTT pointed out. When choosing a C4D, you need to choose it base on its flow and color. You want it to sort of follow the curves of the render or the background, depending on the look you are going for. 3. The font is bad, and so is the color and text placement. 4. Crop down the size of the sig so that it goes from the bottom of the render to the white things protruding from his back.