I left a lot of shots out as well. nothing special on the amp- 4 screws in the corners. bear in mind I do this for a living as well.
the shelf is a direct copy of the original and the only thing I left out were the rear vents. if youare going to do this : copy the shelf first, mark all the holes in it and put a centre mark in the speaker holes. make a jig out of the 6x9 cutout that came with the speakers and use the centre mark that you made earlier to line the 6x9 up.
from there copy the 6x9 gril/templatel onto a bit of 16mm MDF. glue/screw/carpet and fit it all into place.