How to hang a gutter

Thank you for always watching my videos.
I actually tried to hang a small side ditch [Chobari] on site. Drive two stakes with the width of the plank, and measure the top of the stake with a level. Calculate the difference between the planned height of the gutter and the surveyed height of the top of the pile, and mark the pile with a nail. Based on the marks, hammer the cutting board, mark the position of the gutter with TS, and it is completed.
Please be in when it is good reference.