There's a thead in the DIY section with pics that show where most of the upper clips are, though it's for headlight removal, not complete bumper removal.
See http://typeaccord.co.uk/forum/topic/1406-headlight-removal-and-part-of-the-bumper/
If you want to see an exploded drawing, go to the Lings Honda website.
Here is a link http://www.lingshondaparts.com/honda_car_parts_catalogue_C01.php
Put in your car reg, and then after a couple of other clicks, you'll come to all the drawings for your car. Go to the bumpers drawing.
There are several clips under the front bumper, and a couple of hex-head blots into captive nuts. The latter rust up, and are the most difficult part of the job, the rest is very easy, just lots of clips on the upper part. When you remove the clips, make sure you know where they go back, because some are longer than others, as you will find out
