Greetings,
If you go to Steve Good's cataloge here
http://www.stevedgood.com/catalog/you can find a fretwork frame and then, you can just type in "Always kiss your investigator goodnight" as you requested using a font called Freefrm 721 Blk which can be scrolled out
with-out any of the inside cuts falling apart. Type it as large as you want to fit inside the frame.
Also, , you can trace a circle around a cap or just Google circle images to get the size circle you
want and then, using the same Freefrm font, type BA as large as you want and glue or tape it
to your circle for the pattern.
God Bless! Spirithorse
P.S. Other fonts like scrollsoni will work also. Just find a font that is usable for the scrollsaw.