I finally got my masternode UP 
How do I can check if is working fine? Any advice?
How do I can check if is working fine? Any advice? You can try:
cli masternode outputs
It should show not-empty TX outputs
If wallet is not synced, you may need to wait till it fully synced, and the restart the wallet to see proper output from this command.
As i ask other people who run masternodes on discord about output. Many of us don't see any outputs, so i think this is not an issue.