Wondering if anyone can help, I’m really stuck on figuring out what this means… "Using 8mm needles pick up and knit 7 stitches from 6 cast off stitches at top of left sleeve…"
So how exactly do you pick up 7 stitches from 6 cast off stitches?

Welcome to Knitting Help!
You can pick up one stitch in each of the cast off sts plus one stitch in the space between two stitches.

Thank you!