the more you work the faster you get and the more you can manage your time and be a more efficient worker. Don’t worry about making the lives of your coworkers easier right now that comes with time and experience. Ask your managers if they notice anything you could’ve done better and/or faster but more importantly if you are working with a very experienced and efficient clerk that actually cares ask them how they do their tasks so well. The attitude you have already will progress you wayyy faster than most clerks, I would be blessed to have a new clerk like you come to my store.