My first PS Signature

If you copy and pasted that background, try to blend it in with another layer, or try to make it not as obvious. The render itself should be the focal point, if you're not going to have texts, and just render. Also, try to make the render stand out more, either by making it not as unnoticeable. From far, all I can see are a barrage of colours. Generally, amazing signatures focus on the render, so that it can be eaily recognizable.