HOW TO MAKE YOUR DECORATIONS
Unfortunately the guide marks are very faint on the 'Fir' designs.
If you can't quite see them & you have the 'Yew' sheets as well you could try folding 2 sheets at a time with the Yew sheet on top as your guide.
Alternatively you can measure 2cm in from the bottom edge & make a fold.
Use this to guide every subsequent fold you make.
Or you could measure & mark every 2 cms to create your own guides.