Vital info that is missing (without which you wind up without an armhole):
After description of loose cast off:
Knit 45 (47)sts. (ie. remaining sts. in row)
Next row: Knit 45 (47)sts. Turn needle and cast on 20sts. very loosely. Turn needle and knit remaining 45 (47)sts.
Knit till work measures 22cm from armhole slit.
Make another arm hole the same as above.
If you purchased an incorrect pattern, please contact
me.