Column joint - almost there. Instead of knife blades cut into the beams, the blades need to be between the beams, and it needs an eyelet for cable trusses. The connector should be the interface between round wood and plywood, or fabric.
DIY Painting: Coffee Can Lid as Paint Splatter Shield - Paint like a pro. To make a splatter shield for when you’re painting a high surface, cut a slit in the center of a lid and pull the paintbrush through.