Keep the ideal well in mind. Expose yourself to good horses other than your own. You can not be a successful breeder and stay in your own back yard. Plan only to improve one fault at a time, keeping all other conformation equal to or better than the herd average. You cannot do wonders in only one generation, and this brings up the thought of starting with the best mares your money will buy.
Life is far too short to grade up.
In the selection of a stallion to the above, I would advise line breeding. Many people will shy away when this word is mentioned. Some, because of ignorance and others because they have been misinformed. The thing to do is to have someone explain the linebreeding theory in such a way that it will be clarified in your mind. It is very interesting once you understand its principles.