i dont know if its just the size of the image, but its very pixelated at least on my end. i would try resizing it to 400px x 150px, that is the norm for signature dimensions. i would also try using a different color/gradient for the lettering, make it pop out. other than that, very good for a beginner i think.
The piece itself looks bigger than it needs to be unless it's that size for a specific reason, e.g., wallpaper. Blending the focal point could be improved. As currently constructed, it looks more so plastered than layered into the photo. Placement/size of text could be better, as right now it's drawing too much attention away from the actual piece.
The issue is I can't tell what you have done besides putting a render on top of a background and maybe adding a light effect. Is the background something you made or is it a premade background. As stated above, the size is unnecessary. Not bad for a first try though, keep on going!
Nice work i think you have done really well on your first one! With time i think you will improve i think if you made it more crisp it would of been improved alot, what have you made it for?