The first and usually only step is to download all your transaction data from Zilliqa (ZIL) and upload them to Koinly. There are a couple of ways to do this:
Note that if you decide to use CSV files, you have to make sure to import your deposits/withdrawals and trades for all previous years— not just the current one!
If you're an Unstoppable Domains user, you can also enter your domain instead of your public address into Koinly to fetch your transaction data!
That's it. The only other thing to keep in mind is to tag your airdrops/forks so they show up as Income on your final cryptocurrency tax reports!