It's not a stupid question at all! No questions are stupid--we've all had them, believe me.
You can't bind off at the end of a row--you are painfully aware of why. Bind off at the beginning of the row for one armhole and at the beginning of the next row for the second armhole and you'll be good to go.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry