Hello Minecraft owners. Portforwarding help..

Did i portforward correctly? IF I didnt what did i do wrong o.o
I can't connect to my server it says failed to connect server
connection refused : connectFirst, wrong section.
Second, you did it wrong.
you need to port forward your internal IP.
here is what to do:
got to start, then type cmd in the search option
hit enter, now type "ipconfig".
Find where it says "IPv4" next to it you will have your internal IP.
you need to forward that IP.
Good luck