Going to the next star 75 skill point, if 1 day u make 10 PT + the player playing 2 match every day, so my suggest 1 day he gets, (10x2) + (2) = 24++ skill point, so in 3 or 4 days ur players going to the next level or u will get a special ability thats ur choice, if u manage 10 hours in 1 day....This refer to youngster 18yo. (btw sorry my english not really good, this just my theory).