You're doing it. Not bad, but I miss the concept of security. How will you protect users?
We store 95% of our 24 hours in a cold wallet and partner with major custodians for segregated management. In addition we pool 5% of our monthly profits. We will use the pool funds to compensate for user assets in case of damage such as hacking. With this, we aim for 100% asset protection.
I think that the hacking required more funds than 5%. If hackers will find the vulnerability of the exchange, and will often crack it is not enough money to pay off all traders.