Good rules. With leverage, you have to be aware that your position can be liquidated more easily than you first think. In many exchanges, the price rises higher or falls deeper than the average market price, especially if there is a sudden big price move. In many smaller exchanges the price can even fall near zero or overshoot significantly. A stop loss isn't always enough to protect you from these events, since low liquidity is the cause of the price difference compared to other exchanges. These moves wipe out many players and catch inexperienced traders by surprise.