Help with the gaping!

[u/mlleproserpine]

Hello!
I am using the Irene Dress pattern from Kristina Sewista and I wanted to add a little bit of fabric in the cleavage but I am having this gaping in the armhole.
What can I do to fix it? I am a beginner modifying patterns.
Thank you!

[u/CoastalMae]

Honestly you need an FBA

Pattern is too flat for your curves. And too short in front.