Question

http://prntscr.com/cxpe7g

Answer 1

Can you explain why you make your choice by telling me what do you think the next two steps are?

Answer 2

It's the last one

Answer 3

Nvm it was the one I chose first.

Answer 4

My question was how did you come to decide on the one you chose?
If you decline to answer, I will still give you some final hints.
Here is how the square was meant to be constructed.