@Doombreed My solution for the blood-skeleton puzzle was to make every tile a skeleton first. After that, clicking the bottom left and right corner yielded the desired shape.
For the square - circle - triangle thingy I also just found these two hints. I guess it's meant to be that way. Finding out the third pointing direction isn't that hard with just 8 possibilities to try.
Once I had the position of the triangle, I fiddled a bit with the other two hands and by chance got it right relatively fast. So whether it is intended or not, this puzzle is quite easy to do without having to find all three clues.
@jimmycarlos I see, you're right about the ticket booth.
I bet you finished the game with the mirror shard still in your inventory. Happened to me too. In the room where you get the food, you can cut the poster with the shard to get the solution for the coat puzzle
Found that puppet puzzle quite hard to get exact, had to use hint paused on solution and it still took me awhile to get it right. Hard to remember some of the things. Got quests done anyway.