Yes, I generally do speak my mind...especially when people ASK for questions on a public forum.
And generally, when new member post that intend to breed, but have know idea what they are doing, they are not met with loads of support. I don't think 'what you are hear asking is very clear'...I'm not sure what information you were looking for...you didn't ask for specifics.
IF you and your cousin are determined to enter this venture armed only with a handful of tips from a web forum and following the theory that you should just let nature take it's course, then sorry, but I have no further information for you. That's not the kind of thing I would willingly support and encourage.
IF you and your cousin are interested in becoming REPUTABLE breeders, then there is lots you can learn and lots you need to do to prepare yourselves--breeding is not something you just 'pick up as you go.'
* For starters, the two of you should find an experienced breeding mentor. Online research is no substitute for hands on experience and valuable information from someone who has experience.
* A mentor will also help you evaluate your dogs and how they compare to the breed standard and give you an idea of if they will compliment each other well and if they even
should be bred. Learn the standard backwards and forwards.
* Research which genetic issues Yorkies are notorious for. Have your dogs screened specifically for said issues, not just "vet checked.' Also, you will need a good knowledge of the dogs in your dogs' pedigrees and their health records, not just your two dogs.
That's where I would start. Again, it's a very broad area that you need to cover before you ever start, thus why I said at this point, you shouldn't even be entertaining the thought. If as you put it, it is 'too much for you to contend with' then it probably would be in the best interest of your dogs to leave it alone. Breeding can be full of heartache, but it can be very rewarding as well IF you are willing to put the time required into it.