Wanted to help out with showing how to make your profile public,for those who get lost from the instructions provided,I'm not going to lie...I know I messed up,lol.
So I decided to provide screen shots,for those who are used to that or just catch on quick through pictures.
Look for the Comm symbol in your menu,and select that:
Click on the third one in the Comm menu,with the two people shaking hands.You will always be the first on the list.Click 公開設定 as shown in box no.2:
Another menu will show up,select the first one,as yksehtniycul stated,by default it will be on the second one.And last,at the bottom,pick the first choice to confirm it.
I hope this was helpful,if I left something out or select the wrong choices,please let me know.