Great! If you knew how to make that sentence, that means you must have known quite a bit of Esperanto already. Finally, it’s useful to know this word:
Esperanto for to be doing or to be feeling is farti.
You use this usually to ask people how they are. You could associate that word with farewell which could mean fartu well or do well.
Use the word kiel (which means how) and say literally how you are doing?. Also, try to answer that question: