1. Top of assembly includes the component with the arrow, a small 2-hole component and a large 4-hole component.
2. Combine the 4-hole and the small 2-hole parts together with dowels and glue. Then trim and sand flush.
3. Place the arrow component on top and pre-drill through the smaller 2-hole part using a 3/32 bit. Place a wood screw through the parts, careful not to over tighten.
4. Repeat assembly for the lower structure, using glue, one small 2-hole part and one medium 2 hole part and the bottom of the large 4-hole component. For these, the dowel will go all the way through all 3
Scott C Young