Simply put - nothing. Just wait hard fork, after that if you're keepin your bitcoins in exchange, they may or may not give you Bitcoins BIP148 and BCC. If you're keeping your bitcoins in private storage, then just wait until wallets will make official announcements what version of which wallet conforms with BCC code for sure. Right now it's a bit of commotion.

There's no telling what should be reaction of other miners to BCC. They may be prone to try to DDOS BCC, and it's not obvious whether you can trust your private key, because if you showed it in order to get Bitcoin BIP148, there's a chance, it might be used to stole your BCC. So just relax and wait for further development. Don't move your coins until this tumult will settle down