This video shows you how to get the skull that is hidden in Bad Piggies When Pigs Fly Level 3-33. The skull is above and a bit to the right of the starting location. The idea is to launch off the ramp to the left to loop over structure in the way. Unfortunately, if you clear the obstruction, you have way too much momentum to drop on the skull, so use fireworks to slow down. It’s very tricky business.
If you have a different strategy for completing this level feel free to leave a comment below.