It’s too big

I love using New Look 6977 for quick knit tops, especially when I about 40cm spare from a larger project. That happens a lot.
I’m showing you the back view as it looks sloppy. It’s too wide. The front view is ok but I’m using an 8 and that’s the smallest size this pattern offers.
Above is the original back pattern piece shortened to my size.
Above I’m marking out to fold out the width I don’t need – 3.5cm in total.

Lastly I’m doing an above waist sway-back adjustment. So the fullness is only folded out at the centre back. This fold tapers to 0 at the side seam. No length is lost at the side seam, only at the centre back seam.

Finally I have to ‘true’ the grainline and add centre back seam length at the hem. Otherwise, the back hem rises and I want the hem to be straight.
Here’s the new back piece. The width is a better fit and there’s minimal fabric pooling now.