I needed the following:
- royal icing (piping and flooding),
- Wilton #2,
- piping bag,
- blue food colouring,
Step 1: Outlining the reindeer. I used white piping icing to outline the star shape as close as possible to the sides.
Step 2: Flooding. After 10-15 minutes I flooded the whole star and used a toothpick to help in the corners.
Step 3: Details. I piped the snowflake shape on the flooded surface; first the diagonals, then the small branches.