We made a gigantic 3 meters Teddy bear, but following the same process you can make any gigantic stuffed toy you want.
Step 1: Finding the patterns
First step was to find a nice stuffed toy that would worth the trouble. We had this funny Teddy bear that was about 30 cm. The next step was to decide the new dimensions. We thought of making it 10 times bigger. Once we've established the final dimensions we knew exactly what we have to do.
Every stuffed toy has some patterns that give its shape. All we had to do for this next step was to find the stitches and cut them off using a scissor. Our Teddy bear was symmetrical so we only had to cut half of it (if your toy isn't symmetrical you should cut all the stitches). We also had to make sure not to cut anything else but the stitches. After we cut them off we had like 13 elements. These elements were actually the patterns of the stuffed toy.
Step 2: Scan the patterns and trace the outline
The next step was to scan all the elements and trace the outline of every one of them in Corel or Photoshop or any program you like. You can even use Paint. This is what you should end up with.
Step 3: Enlarge the patterns
Now remember we said we would make the Teddy bear 10 times bigger. Well, all we had to do was enlarge every pattern 10 times. Don't let the fact that you don't have a large printer be a problem. We didn't have a large printer at that time either. It was easy and cheap to print the patterns on A4 papers and tape them together afterwards in order to get our patterns ready.