Ok, assuming that the cabin air filter you're looking for is the A/C microfilter, here's how to get to it.
Remove the glove box:
Open glove box and disconnect support straps from left and right sides.
Working from underneath glove box, unlock left and right pivot clamps from left and right corners of glove box.
Lift out glove box.
Remove screws retaining right and left side carpeted console trim panels.
Remove trim panel from above glove box.
Remove two screws retaining ventilation duct and remove duct. (Has a reference to a picture for this step, let me know if you need it.)
Remove cover from microfilter housing. (Has a reference to a picture for this step, let me know if you need it.)
You should bee able to just pull the filter out from here.
As for attaching pictures, if you go to the advanced post editor, there is a section below the reply box labeled "Additional Options," and there is an option there to attach files.