HAHA oh gosh I actually used to live down the road from this bunker thing. I never got to try out the slide >:(
don’t worry, your english turned out fine, dude.
as a foreword of warning,
it is best that you don’t use this post as a standalone tutorial,
instead, try to use it as a study aid to help you make sense of real-life references.
(same applies for any decent “art tutorial” out there, really. :p)
bolded numbers correspond to the numbers on this post’s pictures.