If you are happy with the shape you have, it would be prudent to start off by filling the voids with bondo, sand and shape to back to smooth and then begin the process of laying glass.
From what is seen in your pictures, you appear to be very close to a final size you are wanting to end with. This will be a problem as you lay glass and resin you will build up a considerable thickness. You should consider giving yourself at least 1/8 to 3/16 of an inch of room for glass build up and then final sanding and finishing.
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When life throws you curves, aim for the apex...
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