So I found a second PDF (https://www.ausbats.org.au/uploads/4/4/9/0/44908845/bat_origami.pdf) which has clearer diagrams and even shows an additional step that is missing in the first PDF, making the transition between step 6 and 7 easier. However, it comes with no text at all, so unless you need written instructions to go along the diagrams, I advise you to use the second PDF. It's nice to be able to look at both, though.