My picture seems unrealistic. Why?

I'm no expert but the lighting of your lettering is not the same as the scene - the lighting on the scene seems to be from the top right and back - the shadows are falling forwards and down. Your sign seems to be lit from more than one angle as the shadows on the letters show lighting from the front top but the bottom seems a bit bright.
Just my 2 cents hope it made sense

Thanks for the ideas guys. Hans, thank you for working on my pic, but I wanted it to seem realistic, your picture is way too overexposured. Anyway's, I'll try to make it look better and I'll post it here so you guys can see it. Thanks again!

Well i think main eye catcher here is the rail the wire goes trough it, also that wire ends mid air. text itself is higher quality than the rest of picture. also somehow my eye seems to think that the rail is fake cause its completely single colored i blame the image quality for that
(edit didnt notice that the replies were from 6 months ago got email that suggested topics and this was one of em)

Hi Rick,
I am a beginner of Blender but i watched a tutorial about a modeling two days ago and it was very helpful about rendering and etc.

You can watch it from here: https://www.youtube.com/watch?v=xU_pi1UxISs The rendering part is at the end. I think you need to use Cycles render renderer for better results and Sampling adjustments for render samples 50 or 100, for Preview 40. Its a bit up to you.

You can use also emission for light.
I hope this tutorial will help you a bit about rendering.
Thanks. Best regards.
Sertac.

Use an HDRI for the background (pick one that is similar to the scene)
This will illuminate the part with the same/ similar light quality and reflections as the rest of the scene.