to add on.....
There are actually four clips but the two on the top you don't really notice. The bottom clips - the outboard one is pretty easy, you will need a small fine screwdriver to pop the clip undone. The inboard one is buried in there pretty far, look very closely and you'll see it. This is the one I broke

the first time I pulled my mirror caps off.
I didn't find reassembly too difficult though I've hear it is from others. I fed the top clips in first then made sure the bottoms clips were in the beveled portion that goes towards the hole they should belong in - once they are in position just give it a good firm slap like you would slap your wife

. It'll pop right in.