Here is how I took approximately twenty tiny umbrellas and snipped them apart for a cheap and easy DIY project.
First, disassemble the umbrellas. Cut the frame and then twist off the top.
Repeat. Repeat. Repeat.
Interestingly enough, I found a scroll of Chinese looking symbols rolled within the white top of each umbrella. I have no idea what it says. Probably something boring like assembly instructions or even just filler paper, but it does sort of resemble a fortune cookie message... just saying.
Arrange in your shadow box and enjoy!
(Oh, and learn from my mistake: Mod Podge will not work for this project. The ink will bleed.)