Altering/Remaking a Jacket

So I have this cute blue F+F Jacket I got in their LP bag, but it’s way too small for me. It’s so adorable, that I decided I wanted to make my own that fit.

I’ve never made my own drafted pattern before (the circle skirt doesn’t count) so I tried winging it and I had not a clue what I was doing. I still don’t understand the construction lines enough to manipulate then raw like that.

So I dug though my box of patterns, and found a button up shirt that looks like I can alter pretty easily to do what I want. (I think what I just really need is the bodice part, the sleeves I think I can do on my own)

The though part though, is that my hips flair out to like 2 -3 sizes LARGER than my bust on each and every pattern I want to do ever. Hopefully I can just crop it right before it gets to the point, and it fits fine, or I need to figure out how to alter them to flair out from the waist to hip to get it to fit.

I’m going to be altering a McCall’s 5138 for this. Wish me luck!