It is basically made of two parts (shown by the dotted white line) that you then sew together.
To make sure the seams match nicely I press the two sections in different directions and butt my seams together:
(I press the seams of the HST blocks towards the 'paw fabric' and press the joining seams open to reduce bulk)
So that's my method. It's worked well so far! Once you've done a couple you can chain piece the different sections. It's a little addictive: