I'm making the jacket from this Simplicity 5746 pattern, view "E." http://www.amazon.com/Simplicity-Wardrobe-Sleeveless-Cardigan-Camisole/dp/B00KTI2S0S I'd like to flare the sleeve out and make it a bell sleeve adding about 4" to the wrist circumference. I'm thinking I need to add (2) slashes to the sleeve pattern from the elbow to the wrist. Does that sound right? If not what would be the best way to do the adjustment? I'm using a lightweight suiting material if that makes a difference.