Background Help?

[SeeNoEvilFR]

I want to make a new background but every time i save it then upload it always comes out blurred i wonder if there is a certain way to save it. I use Photoshop CS5 and i have tried saving as JPEG and PNG. Please help me.

 

[LowZ98]

Ok, well, at least you have tried saving as png, as jpeg is not reccommended if you want decent quality, could you maybe upload a screenshot of your work in photoshop and then a screenshot of the blurred version?