Please, has anyone ever done his/her fingerprinting by self and mailed to the FBI for clearance? How did it go and how did you do it please? The service is quite high for my pocket this time, thinking to do it myself and submit?
You can certainly try. I would recommend you spend time researching online to see how to do this yourself in a way that gets the best / clearest results.
One of the risks in doing it yourself is that there is a higher rate of rejection because the fingerprints are not clear enough.