On Feb 7, 11:45 am, Ike wrote:
Q1: The crown molding we purchased has a very decorative pattern. It
is very similar to the third molding shown on this site:

http://www.invitinghome.com/Crown_Mo...lding_List.htm

While it is possible to match the pattern when making a scarf or butt
joint, it is not possible in the corners. What is the best way to
handle the inside and outside corners? Just make the cut and match the
best you can? Use some caulk to feather in the mismatched contours?
Show guests your new crown molding with the lights dimmed?

It probably IS possible to match the patterns just not very easy.
Splitting the corner may make it easier, see he
http://www.askthebuilder.com/555_Ins..._Corners.shtml
or
http://tinyurl.com/2oyhuu

Best is probably the blocks as already suggested.