Since you have access to free leather, it might be worthwhile practicing some of the basics with the leather you have. It would be much better if you could come up with some 8/9 oz leather for making sheaths etc. Nothing is wrong with the leather you have so some of the touchups (burnishing, fine trimming etc) would probably add something of a more professional look. Also, check your local library for books and DVD's. They may even order DVD's. Chuck Burrows at Wild Rose Trading has some very good ones. Some of the people who have commented here also have good instructional DVD's that will help give you more of a sense of direction.