To create a square, you have repeated some lines of code. This is not the most efficent way of doing it. Instead of typing out many lines of code, it’s easier to use a loop.

Instead of code to create a square like this:

elsa.forward(100)
elsa.right(90)
elsa.forward(100)
elsa.right(90)
elsa.forward(100)
elsa.right(90)
elsa.forward(100)

You can type:

for i in range(4):
  elsa.forward(100)
  elsa.right(90)

Try it yourself, and see what happens when you save and run your code.