Please visit her site for the tutorial http://www.pompomemporium.com/category/popular-keywords/crochet
Have a look at all the lovely styles she has created using many kinds of craft medium, read the comments for other great ways to make them that others have tried. The thrift/charity shop is a great option for bits to embellish with.
You will find the tutorial for the wheel shaped Dorset buttons here http://www.craftstylish.com/item/42688/how-to-make-dorset-buttons
You will find the tutorial for the wheel shaped Dorset buttons here http://www.craftstylish.com/item/42688/how-to-make-dorset-buttons