Egg carving is an unusual art form. How did you get started? Egg artist Greg Martin: 'I first started carving when I moved to Texas, where my stepmother raised emus as a hobby. I started carving in September 1995 and sold my first carved emu egg a few months later - the pattern was of a woman surrounded by flowers. 'I taught myself how to egg-carve. One thing about me is that if I see an object or sculpture, I can usually tell or figure out how it was made. 'These eggs are very thick, compared with chick eggs. The ostrich egg can hold up to 200kg if it is not tapped out. I design the egg so no part of it will break off: each area has a couple of supports in the form of a flower, a stem, or a cloud. 'But I broke my first egg after I was done, while cleaning it out. I've learnt many things about eggs - just by picking them up, feeling the weight and looking where they've been tapped. 'I've some favourites: a poem I wrote on an egg to my wife, the Roman Colosseum that lights up from the inside, and an egg with the five monuments in Washington, DC.' Egg Arts Exhibition, Sha Tin's New Town Plaza, daily demonstrations. Ends tomorrow
