Video part 1

 You will be a brilliant engineer one day I'm sure. Use ear plugs and a mask when necessary, otherwise you will suffer from tinnitus and breathing difficulties. Great video! Oh, and learn to weld properly, Sorry.  DOCTOR  D.S. I been Thinking to improve Your Invention, that You need to detach the bowl from the wheelbarrow and weld two hinges at front of the bowl, and two removable pin locks at the rear of the Cart, and You will have an easy drop of the cargo like sand, stones, corn, etc.. Blessings  For this Handles Hight; It Need A tractor Seat Or At Least A Bicycle Saddle. To Be More Comfortable. But Besides this, It is Great Invention. Congratulation Engineer. Blessings  nice job. just one question can you actually tip the barrow  (you did not show it so I guess you know. And cover that gear the protect your feet. that gear wheel will slice your feet in seconds - trust me!