Is it possible to use AA miles for a trip using different one world carriers. If so, how is it calculated and what is the procedure to book it?

Currently I have about 90K and I know that it's very limited but ultimately I want a goal I can reach. For example, I'll be flying out of NY and let say I am interested in going to Austrailia and one of the one world partner has a hub in hawaii that also happens to fly to Austrailia then that'll be really great. Or maybe if I fly Cathay and since their hub is in HK, I can visit HK and then to Austrailia?

Any advice is greatly appreciated.