Happy days

In the past five days, I visited my relatives. They were all healthy and pleased because my older cousin gave birth to a new baby several months ago. The baby is very cute and we all love him. In addition we went shopping and bought lots of things for Spring Festival such as couplet, candies and new clothes. Oh, what's more, we went to see a fireworks display yesterday and we bought many fireworks. I wish I could be brave enough to let off fireworks.haha

This is great! The only things I would recommend would be writing shorter sentence - yours tend to run on, which is stylistically frowned upon in English. Furthermore, a space always follows punctuation such as ,.:;- and so on. Also, I don't understand your use of couplet, which is generally taken to mean 2 adjacent lines of a poem. Elder is ok, but archaic. Really great spelling!