For continuous media, enter the JOURNAL command. The CPCL manual explains that JOURNAL disables the printer's automatic alignment feature which searches for bars/gaps with which to align.
Send the SETFF command to the printer. The SETFF command can be used to configure how much extra feed is given after the FORM command is received in a CPCL label.
Add the FORM command at the end of your CPCL label but before the PRINT command. FORM instructs the printer to feed to the top of the form after printing.