Because I haven't made anything near my expectation, I kept looking for corsage tutorials.
In my quest, I came across this tute. I tried to make one, still haven't got what I was looking for.
Then, I modified it a bit, still using the same template, but instead of only 4 smaller flowers, I used 9 smaller ones, so it became 4 tiered.
Voila ! I've reached the result I've always wanted. Instead of pin backing, I used magnet, so as not to make a hole on anything it attached to.
The back is fabric covered magnet. Here I removed the other magnet (its' pair) to attach the corsage to something.