I see what you say and I thank you for your advice :) i'll do it ! but, can you explain the second part of your analysis? I don't understand it :/, well I don't see what you underline ^^' :)
Really nice work, but it does look like the rotor blades have rusted and are stuck, which would make it impossible for it to fly. So maybe if you'd add shiny metal streaks inside the rotor covers to show that the rust has been worn off by them? Also the oil drum that is lying down has a seam showing on the bottom. Don't take my criticism the wrong way. The piece is awesome.