Your photos are interesting...combination of 3rd world living conditions and modern, as we know it!
wishing you good luck in your endeavor, stay with us, you will learn much......about sewing a straight line....put several layers of painters tape ( sort of a masking tape) on right side of machine body before the needle, where you want the edge of your fabric to be....this will help keep you straight....as you lead fabric to needle....check out YouTube for many how to ttutes!