Are there any grammatical flaws in my writing?

Well done. A couple of small changes. "as high as about my height" is awkward, Something like gres that are about my height or use something along the lines from "Oklahoma" where they sing "the corn is as high as an elephant's eyes". Again, I like radiantly. The last sentence is a little long and could be made into two sentences or more. On the whole - very good. Paints a clear and beautiful picture.