How to get my ringtone set on my iphone 4s?

I have the ring tone int the tones part of my iTunes library and i have uploaded it on my phone and it is also in my song library on my phone but its not my ringtone. How do i set it or fix this mess?

If it is under tones in iTunes and you have already dragged it over to the phone then you have to go into settings and then I believe it is under sound and there should be a place where it shows your current ringtone. Tap on that and you should see your new ringtone somewhere near the top.