Now, go to Home Depot. Get some of these:
The hot glue is
HOT!!! It will burn you, trust me on this. You are going to get burned. The clip is to help avoid it, especially when you are doing tight areas like this:
Now we have our main panels attached, it's time to do the REALLY difficult part.
You should have removed the rubber from the armrests. Be careful, because it's glued on there and can/will rip. The only way to avoid the rips is patience, maybe try heating it gently with a heat gun. Now, we're going to cut our leather a good bit bigger than we need it, because A) it makes our lives easier, and B) we can trim later.
Why did we cut it bigger? Well, simple. So that we can cut slits in it and thread it through the grooves on the armrest where the rubber cover goes!
Glue all those tabs down with the hot glue gun.