I have now been informed that 'Ganesh' should be spelt with 'Ganesha', so please accept my apologies!
Ganesha has four arms and the head of an elephant, with those big elephant ears enabling him to hear the needs of his people. The multiple arms demonstrate Ganesha's immense power and ability to perform several acts at the same time. This deity brings good luck and clears all obstacles and is therefore worshipped before important events and rituals.
If you look at the picture below you will see that Dibyendu Dey and Purnendu Dey have now covered the straw structure with clay and the image of Ganesha can be clearly seen. He is looking truly impressive!