comboy's puzzle #1

This is my first puzzle design. It's a printable interlocking puzzle, which means you can print it without any supports, and it doesn't fall apart when you move it. It's only level 1 though (if I understood levels correctly) which means only 1 move is required to remove the first component.

Since it's the first puzzle designed by me, any kind of feedback is highly appeciated. I would also like to know how do you estimate difficulty of this puzzle since I'm not able to judge it objectively.