[kiddo]

if u played 3/6 and 5/10 and got lucky but havent played 10/20 before I dont think u are a 1.5BB/100 winner when u take a shot, specially not if u havent datamined a lot at that limit. U have to be pretty good and pretty used to the limit to win that money at 10/20. At least if u play more then 1 table and dont do an extremly good table selection.

But keep playing if u just want to practice. Go down if money is important for u.