I just love the way it has turned out. Here is how I did it
Step 1 : I cut a huge 5 in a thermacol/ styrofoam sheet that's 10 mm thick.
Step 2 : since the edges were rough I covered them by sticking with crepe paper ribbons on all the sides.
Step 3 : I then made the crepe rosettes. It is very simple. Take a crepe ribbon about 15 cm in length.
Start crumpling from one side to look like fan folds
Now stick the edges with glue.
Now you have a loop. Just flatten it by bringing one edge to the center.
Pinch a little in the center and pick the rosette. Apply glue on the back side and stick it to the the number 5 we did earlier.