I started with a thin piece of discarded wood roughly 12x11. I layered a thick coating of thick white gesso with a large acrylic paint brush. I was able to create lines that simulated grain.
Next I used two colors of fluid acrylic (titanium white and carbon black)  I randomly used my paint brush as well as my eBrush to create this worn fence or board look with the grain and direction completely different than the original piece of wood.  I used my siphon with my eBrush to spray diluted paint with water to my wood piece in white to tone down the look.
I let the layer dry. I painted the lines across to separate what looks like boards and added marks where rusted nails may have been.

I used my cutting machine to cut out this saying in Vinyl and placed it in the center of my board using transfer paper.