Here are two links with photos on the process to finish bellpulls. I hope these articles answer your questions. I would review and keep both at hand to refer to when the time comes for you to do the assembling in case you run into a snag. If these don't answer everything you need to know, you could also check youtube. Good luck and hope it turns out beautiful.
http://www.nordicneedle.net/guides/stitching-materials-guides/bellpull-hardware/

http://tts-learntofinish.blogspot.com/2011/09/bell-pull.html

Thank you for your help.

Happy to help. If you are able, post a photo here so we can see the results of your finished bellpull or a note of how the process went. Not too many stitchers have posted here about finishing into a bellpull that I have seen. I have a beautiful one sitting in my stash that I will have to stitch and try to finish the same way one day and I have no experience doing this either.