I am going to attempt to make a fiberglass speaker pod this off season. I have NO experience with this sort of thing but am willing to attempt. Is there anything tricks or tips I should be aware of?

My first step is to cut the MDF plywoof to fit on the step where the speakers will be located. Position the speakers where I want them and with a glue gun and strips of wood position the speaker rings in the correct location. Cut fiberglass cloth to size and stretch over box and staple to desired form. Mix fiberglass resin and apply with paint brush...let cure for roughly 1/2 hour or until tacky. Apply second layer of resin and let cure completely. Sand to desired finish and paint to desired color and add clear coat. Install speakers and wire. Is there anything I am missing or something else to be aware of?

Wayne