I am in Shambala and have got the key but I cannot get to the flower room I have jumped the 3 highest blocks from where I got the key in a clockwise direction which brings me to the first corner but wherever I hang and drop I fall into the water, I can't jump to the next high block it is too far

If you're in the corner where there is a doorway to a treasure, then turn around and jump back to where you entered the room, but jump on the tops of the wooden things, not the lower parts. On top of the last one, which is the tallest, run/jump forward to hang from the ledge above the door you entered the room from. Shimmy right and drop.