Tomegad,
The questions already asked hold the direction to answer your questions. The old adage, the beauty is in the eye of the beholder, very much pertains here. There are dozens of "classic longrifle" forms.
My favorite regional style, and therefore the most beautiful to me is the Lehigh Valley of Penn. But, ask the next guy, and you'll get a totally different answer.
Flintriflesmith said it well. To see the beauty, and to be inspired to be creative, takes some kind of connection with either the area, or builder, or style. You'll find one with some mystery, or romance, that just reaches out and grabs you, and draws you to that style. The one I like may totally turn you off.
With all that being said, you need to find out what YOU like.
Get some books, check out the originals, find something you like, figure out why. Then we can give some input that might help. If you can't buy, a lot of libraries have "Rifles of Colonial America, Vol I and II. Thoughts of the American Longrifle in it's Golden Age. James B Whisker has published many books of regional styles.
There is a wealth of information on this site, and many willing to share. Help us help you. We'll give it our best.