How to find downloaded ringtones on the iPhone?

I have the iPhone 5 with the newest version of iTunes. I followed a step by step procedure on how to make your own ringtone for the iPhone. After syncing my iPhone with my computer, I couldn't find where my ringtone was put on my iPhone. I looked in ringtones and text tones. Where would I be able to find the ringtone on my phone and set it as my ringtone?

Ha Ha!
People can't even find files easily on their iphones! For everything you have to 'sync' it! What a shame!
Dear, just buy an android phone and all your problems get solved! Experience its vast capabilities which ios is far from!

Well I'm sorry to say but most likely when you synced your phone to the computer it deleted the ringtone. Your most likely going to have to redo it.