The first and usually the only step is to download all your transaction data from braziliex and import them into Koinly. There are a few ways you can do this:
Note that if you decide to import CSV files, you need to make sure to import your deposits/withdrawals and trades for ALL years and not just the current one!
That's pretty much it. The only other thing to be vary of is to tag your airdrops/forks so they show up as Income on your final cryptocurrency tax forms!