It means that "tall is better than short". In China,people want to be tall so that they can fix other's eyes on them. “高”is an adjective means tall. "比...好"means ...better than .... "矮"is also an adjective means short.

‘正月高比矮好’ still doesn't make sense.

我可以做一件事情，正月高比矮好 我可以做一件事情(I can do one thing) is correct and understandable. 正月高比矮好 正月means January, 高比矮好means tall is better than short, so I'm not sure what the writer want to say.

I do not understand your Chinese sentence well,if you don mind ,add my skype:shuxia.liu and send the picture to me ,I would like to try to help you