From first glance, it looks like you've got a start to the usability study draft. However, quite a bit more work needs to be done. For starters, I would recommend having somewhat of an introductory paragraph at the start. Explain what the usability test is for and its purpose. Next, I would have the questions correlate chronologically with the steps the user will need to take in order to complete the task. Also, you may want to consider formatting it so that you may ask the user to rate the difficulty of certain steps on a scale. Looking at some other usability tests in your group may give you more ideas and questions for you to add as well.

I'd suggest putting a bit more work into your usability study. Overall, you just seem to need a bit more content. What you have is fine, but I'd suggest adding an introduction that explains what the usability study is analyzing. Additionally, you may want to also add a couple more questions. Eventually, you'll want to actually take your usability test and provide your own answers. Additionally, you probably want to add a conclusion section. Finally, I would tweak the format a bit to make your inidividual usability study visually pleasing. Hope this helps!

Thank you for all your comments.I was lost while trying to finish my usability test. So I just wrote what crossed in my mind and hoping somebody will give any suggestion. Thank you again...