After tracing the pattern I read the instructions and decided to add 5 inches to the front pattern piece and 1 inch to the back
The next step is to figure out the point under your bust and also where your "waist". Draw a 2 inch line from the waist marking and then a steep curve from the bust to the new waist point. Re-draw the side line.
Pattern adapted, i cut out some thin jersey as a test run - It's not bad, the gathers and extra width at the sides help
But I don't like how it hangs like a dead weight at the bottom of my belly. I think I need to adapt further to curve back into the original hem line, which might make it a bit tighter around the hips and more to my liking.