After creating a player and signing an agent, go to the draft and start the draft. You will probably be selected in the third round unless you imported your player from NFL Street 2. If you do not like the team you got drafted by, then simulate the preseason. When the preseason is over go to your agent's office on the city map. Scroll down to "I demand a trade" and you will be traded to another team. If you dislike that team as well, then demand another trade. Be careful, as you can only demand two trades until the next season. Go to Performance Institute more than once per week in NFL Superstar mode. To go to the Performance Institute more than once a week, do not go until the day of the game. Then, go and do whatever drill desired. Once you are done, leave the map and go to your schedule. Leave there, then go back to the map and you can do it again. This will allow your player to be very well prepared for the next game.