it is correct except for one word and that is the. The teacher... ^_^ oh and add the word "an" in front of umbrulla

you should use articles on the items an umbrella a balloon etc

Hello Jane, First you have to define "teacher" by adding the article "the". 'authentic materials' is a bit vogue , authentic means original ,genuine, not false nor an imitation , but i wonder what an authentic umbrella or balloon would mean? And it is balloon not baloon ! So could you add some details about the nature of those materials or a closer description of the nature of those materials ,so that I can help you choose the correct word in this context.