If i'm good at, let's say judo, I have blackbelt there etc, then: is it okay for me to make a new account to start from scratch in twinswords (example)? Or is that considered LOL FARMING ?

Err...Your belt is the same for every mode, at the moment, so it wouldn't really make a difference if you played twinswords.

Since it said morally, I assume if he asking if its alright to make a new account to play a different mode.

Playing with both at the same time is not allowed(I think).

Yes it's ok. Closing this and moving it to Rapid Threads.