My Monster !!!! (Check it, please)

I would like to introduce a simple activity to motivate third grade students in private elementary school.  Also it's useful to reinforce the parts of the body (head, eyes, mouth, hands, legs and nose) and numbers from one to ten that we have learnt in some previous classes.
This activity is a type of task-based, which tries to develop different skills in  language and it could be meaningful for them because it attempts to focus on their personal interest at their ages.  Finally  as their teacher, I will be an observer in the class, I shouldn't interfere in their task,  the idea is to support them if they need to ask for help.

The idea is to draw or to build a monster that they can create with different types of materials, that they are interested to use.  It will take us two periods of classes.  In the first class, they'll have to create their monsters, and also they have to complete a worksheet with information about it.   In the second class, they will have to introduce his/her monster to their classmates,  and for finishing this activity they will be invited for sticking their monsters and worksheets on the walls of the classroom as an idea of an art exposition to their parents or family.

Worksheet : http://es.scribd.com/doc/52681818/My-Monster

• Well, first I would like to ask children if they like monsters?, because I love them. 
• Second, I would like to tell them that one day I saw a film about a monster, and it seemed so interesting and nice.  (drawing in the blackboard my own monster) I should tell them that  it had one head, two mouths, three eyes, fours legs and two hands and it was called Totutimy.
• After that, I will invite them for drawing their own favourite monster using the parts of the body that we have learnt in the previous classes.  I should add that it could be created with different types of materials, maybe they could colour or decorate it and also they can add details that they are interested in.  and for those students who are not interested in drawing a monster, they could build it with different materials too. The idea is that at the beginning  of the second class,  they can introduce his/her monster, telling to the class in English language about his/her own monster.  they could also give the monster a name.
• After they've finished their monsters I would like to ask for their attention introducing the worksheet that I have prepared for them, I will expose it in the blackboard with the idea they can understand how they can introduce their monster. Also it's important to say that I will hand in them  the worksheet to complete with the necessary data to introduce their monster.  I will show it pointing which are the elements that they have to be considered to introduce the monster.   I will take some minutes for asking about their understanding, answering questions about the way they could fill the worksheet.   Also it's important to tell you that I will be giving support them in order to complete their worksheets and explaining one by one details about it  if it is necessary.
• Then, at the very beginning of the second class I should show them in the blackboard my worksheet about my monster, which will help them to introduce his/her monster. After that we will start introducing their own monsters one by one.  (I have 16 students in class). 
• Finally, to finish our activity I should invite them to stick their monsters and worksheets on the walls of the classroom like an exposition about monsters.