stargazing platform almost complete an edge worth falling off (well not if it'll hurt)

twelve by sixteen add on. need to trim edges then she's ready for a some kicked back late night stargazing! I may be a smidgen earthy but I really don't want to lay in the grass with the bugs skittering across me in the dark to watch the stars! railing option (well eventually required as I have a high degree of dork factor and could easily fall off the edge). definitely a hermitage upgrade.