Your task is quite simple. You are going to use this WebQuest with all its resources, exploring it to get ideas to design and construct a container which holds something special for you. You will have to concentrate on 2 things;-
As you explore the Internet sites, jot down your ideas in your sketchbook. Make notes to remind you of things you thought of at the time.
Talk your ideas through with your teacher/Mum/Dad or with a friend. This stage is very important as you are talking about your thoughts, so you are altering them and adjusting them to suit your needs.
Don't confine yourself to just the resources provided by this WebQuest. Books, magazines, visiting galleries can all provide a wealth of ideas.