Step 1: Materials and tools
Step 2: Construction points and blueprints
The blueprint only covers the top, two rounded sides, "holder", as the rest is pretty simple 5x10 cm straight cuts.
For the small decoration (P form like) pieces and the top "spike" pieces, I drilled two holes in each. Wooden sticks then go into each one to hold them together. Use some glue to make it permanent.
Step 4: Wooden arbor - finished look
I'd say a nice weekend project. Did cost me around $100 for lumber, paint, concrete