For this, you could do something like this:
For your hook....
Asking a question (since it is a commercial) would be a great way to grab attention. Think of the commercials you have seen and remember the ones who grasped your attention. The hook does this for you. Asking a question, using exciting words (such as guess what, or it's your lucky day) can go a long way.
For your call to action....
This is basically asking you what you are trying to get the watcher to do. Are you trying to get the audience to buy something? Maybe to watch a game next week or come to an event? Maybe to donate money? It is asking you the point behind what you want your watcher to do in result of your commercial.
For your product detail...
Make what you are showing important. If you are trying to get donations, you would try to show them how great or horrible or both something is. That is an example. Have you ever seen the pet commercials about animal abuse that make you feel a certain way where it manipulates your emotions? This is what they are doing.
You can do it :)
