Well from the looks of it, see those small triangles? u have to fold the ends of the 2 side part tings next to the triangle, which the triangle will guide u how much u need to fold, after that u tape it so it stays together, or glue, whatever u can do.
basically it should fold into a pyramid shape when u fold it, so yea, its easier if i just showed u 4th block or something. that and ill look for the actual instructions
ok this is what it will look like if u had scoring tools and actual papercraft tools, with normal printer size paper