Silicon moulds are particularly beautiful for their detail and also their seamlessness.
They are particularly suited to beeswax, but equally good for others waxes ( with the exception of paraffin which needs microcrystalline added for these moulds).
Basic instructions: use a needle to thread through the centre from the inside. There may be now need to cut your mould, allow it to cool overnight and it should be right to pull out. If this is difficult, make a cut half way down so you can ease it out. If there are obvious areas that will trap the candle, cut prior to pouring as in the video.