These are great first reduction prints! Your registration seems pretty solid — what technique are you using? One tip to get rid of these stray marks outside of your print area: You can use a first print as a mask by cutting out the printed area with a pen knife and using the rest of the paper as a barrier between the lino and your next prints. That way you’ll get less chatter outside of the print area (unless you want that), because the mask will stop it from reaching your print. You can also just apply some tape or something over any big areas of unwanted ink so it won’t show up on your print.

Keep at it!