Are my answers to this question about 不仅 appropriate, and how can I make them more elaborate?
You should pay attention to the word after 不仅, 还, and etc. Typically, the things after those words are the emphasis point. 

So: 


The first one 李老师不仅 喜欢 看电影, 也喜欢 xxx. xxx could be something
he likes, such as 玩游戏，看电视，踢足球, ... E.g. 李老师不仅喜欢看电影, 也喜欢踢足球. 
The second one 还 喜欢 游泳 indicates that 他不仅喜欢 xxx has been
said. And again xxx could be something he likes, such as 玩游戏，看电视，踢足球,
... E.g. 他不仅喜欢玩游戏, 还喜欢游泳
The third one 不仅 我 会做中国菜 suggests that the later part should be
而且xxx也会（做中国菜）. xxx can be any person. E.g. 不仅我会做中国菜, 而且他们也会（做中国菜）.


Hope this can help you.