Charles, I must agree with Sheila, you have an extraordinary artist ability when it comes to your pattern design. But I must also disagree with you, not everybody has natural artistic ability, so not every one can do what you do as easily as you say. I'm a perfect example, I can recreate others work, but it is extremely difficult for me to create my own. Your talent is your own, and it shows, and it's something to be proud of.
About spiral blades. Like many I was hesitant to use them due to all of the negativity surrounding them, but when I did my first portrait pattern I used spirals, I instantly came to like them. Granted they are not for everything, but if you're going to do a portrait, you've got to at least try it with a spiral blade. If you make a mistake with the spiral on a portrait, nobody will know except you and they are so much quicker than a straight blade. All I can say is,get over the fear and just try them.
Bob