For the best burn, we’d recommend:

Allowing your candle to initially burn for long enough to melt the top layer of wax. This avoids ‘pooling’.

Placing your candle on a flat surface to ensure a satisfyingly even burn.

Repurposing or recycling your tin. Simply clean it by filling the vessel with boiling water and letting any remaining wax float to the top. After a quick wipe your tin should be like new!