Be willing to train. Just because you cheered, teaching is a whole different ball game. Athletes like students learn differently, so the style that worked for you may not work for every athlete that you coach. Find an older seasoned coach who is welling to mentor you, not just throw you out on the floor. Take notes and refer to them often.
Be patient. You will not coach a Worlds team your first year. You will probably not even coach a higher level team your first year. Be willing to start at the bottom and establish trust between your athletes and the staff. You may be the gopher and the bag holder. Do it and learn.
Be on time! That means be there 10-15 minutes early each day minimum. You have to prepare to teach class and team not just show up, drop your keys and go 5,6,7,8...
Be available. This means work the classes that others don't want to work, stay late if needed and keep your future goals in sight.
Be pleasant. Smile! Check the attitude before you get out the car and keep it there till you get back in after your shift. If you are happy about your job, chances are that you will do a better job. This means the athletes will be happier and choose to keep coming back.