Can anyone tell me how the swirls and scrolling are done so
perfectly on cake. Do you use stencils, and if so where can i
find them. I'm new and would like to try.

Wilton makes two different sets of patern presses:

http://www.wilton.com/store/site/product.cfm?id=3E30D882-475A-BAC0-5D0833D2D8DFB041&fid=3E32BD9D-475A-BAC0-52F239128C2DA736

http://www.wilton.com/store/site/product.cfm?id=3E30D891-475A-BAC0-51DF77778B7B0CDF&fid=3E32BDAD-475A-BAC0-5EF8EA589AD96C4F

They can be used on crusted buttercream or on fondant. HTH!