The High Finish
Level 19 is full of floating ledges, just like The Rising Ledges. But this time the gnomes start at the bottom left, and the finish is perched on the highest ledge of the level.
There is only one way to go: up. Hop from ledge to ledge, and where the gap is too big, let a builder lay a stairway to the next floor.
The last climb to the top beam is the hardest. Do not run out of stairs too early — and keep an eye on the clock. Good luck!