For extra stability, the bottom of the gourd was flattened slightly on a belt sander so it would sit firmly. The interior bottom of the gourd was also sanded flat to provide a smooth surface for the candle to rest on. A ring of scrap gourd was cut to fit the candle, and then glued into the inside. (Wood glue, liquid nails or many other glues will work) Filler or putty can be used to fill in any gaps and further flatten the bottom where the candle will sit.