Aerodynamic bike helmet!

Step 16 Place layers of cloth and cover with epoxy.

While cutting the fiberglass cloth in the previous step, I made dotted lines along ridges / edges in the shape so that I could remember the orientation of each piece (I did this so that I could get even coverage of the plug and maintain the same number of layers across the entire surface). In these pictures, the dotted lines are more apparent. The process is to lay down a piece of cloth and then smear epoxy over it (thinly) being careful not to cause bubbles or stretch the weave. Since you're wearing gloves, your fingers are an excellent tool to use in this process. Another instructable that descriibes fiberglassing is called Homemade Rudder for Surfski in case you'd like to see another example.