nice, this is useful. just for the first one there's no need to wait 10min as once the green hair girls move from left to right, you can walk down 2 steps to the tree right above where the brown hair girl will stop. right after the brown hair girl turn to the right, you have to immediately go down to where the line of trees are at to avoid being spotted by the green hair girl.
my advice for anyone that is still struggling is for the first round, just save everytime and test out where you should stand, when the girls will move etc. after you succeed each area then go for the perfect round. it gets way easier if you yourself know how to finish it