Great videos, fella. Do you think it might look good to add some concrete dye to the slurry to lend marble-like accent coloration to the finished slab? I suppose I could create a few pavers to test the idea. Side note: If you're not already doing it, you might consider creating a simple blog with short write-ups for all your projects, then linking your RU-vid channel videos there. It should help improve your search rank and drive more views to your work. I expect it might help tremendously, in fact.
Good video but In addition, use diamond polishing pads to finish (available online) wear respirator, round all edges for a cleaner professional look, use galvanised wire mesh embedded in concrete to resist cracking, (keep 50mm away from all edges, flood coat first coat of sealer for maximum absorption, less water used in mix equals more strength to end product. Spend a few extra dollars as you will be looking at the top everyday for years to come. Before sealing ensure the concrete cures properly for 4 weeks (increases strength by up to 50%) by spraying with water or cover with plastic sheet...