Hi,
Its not practical to jot down all the points here. You have to undertake the following compliance mainly:
1. Take GST registration
2. Charge GST and file monthly return of GST
3. Pay GST.
We request you to take help of any CA in this regard.
Please feel free to call/ revert in case you need more clarity.
Thanks and regards
Abhishek Dugar
CA CS B.Com