Here are some thread catcher tutorials and patterns that I had stored. I also used a 4" ceramic tile in my flat part to hold it on the machine, and hot glued the pincushion onto it when I finished it. I've made dozens of these for gifts and to sale.
Hope you enjoy.:
http://www.merrimentdesign.com/pincu...ad-catcher.php
http://learnandgopollyco.blogspot.co...d-catcher.html
http://teddiesbylauralynn.com/free-p...adCatcher.html
http://www.msgracies.co/Thread_Catchers.htm
http://tipnut.com/sewing-caddy-patterns/