Thank you, Lynda, for the lovely compliment.
Mfedna, I agree with Linda--send a picture to Peggy. She responds to emails very quickly, and can get you on your way to getting that top to fit you perfectly.
I approached the armhole alteration differently from how I normally do it. I had made a couple of cowl-neck blouses with a Vogue pattern and thought it would be easy to just use the Vogue armhole. I altered the back accordingly but the Silhouettes front piece was way different from the Vogue front piece because the Vogue cowl was deeper. I redrew an armhole that I thought was close and then used the muslin to do the rest of the fitting. It was not an elegant way of altering a pattern, but for me it worked.
I needed the armhole to be smaller than the smallest size on the Silhouettes pattern, so going to a different pattern line on the multisized pattern was not an option.
In altering a pattern, it's good to change one thing at a time and study the effect in between each step. Since a cowl front pattern piece is so confusing, it was easier for me to make the changes one at a time on the muslin.
I think your efforts will be rewarded. This is a very pretty top when it is completed. I absolutely love wearing it.