Instructions
Log into your "Neopets" account. Visit the "Neopets" website and click the "Login to Neopets!" link. Enter your username and password into the corresponding fields then click "Log In."
Move your mouse over the "Explore" tab and click "Map of Neopia."
Click "Mystery Island."
Click "Cooking Pot."
Select the two types of sand you wish to mix. Do not select an item for the third field. All available sand sculptures as of August 2011 require only two types of sand.
Click "Mix Items" to create the sand sculpture.