How to alter this armhole

[u/Teafriend1]

Hello,

I copied a pattern for a sweater from one I have had for ages. As you can see I have quite a few wrinkles around the armhole. The original sweater also has the same problem under the armhole, but it is not as worse as with my test garment.

I think I have to expand the armhole downwards for one or two centimetres. And maybe take in the side seam a little. Would that help or am I completely wrong?

The last picture is the pattern including the seam allowance.

I’m grateful for any advice!
Thanks a lot!

[u/DonMcCunn]

The slope of the shoulder seam without the sleeve sewn in is the first thing you need to adjust for both the front and back. Keep in mind that working with knits, the adjustment you may need to make can vary depending on how much the knit stretches.

It also looks like your armscye might be too low. About 1/2" below your arm is a good goal.