You don't have to make a wall around it. If the tide is on its way in, sit down near the tide line, the wet sand farthest from the water.Step 2, Dig a well for easy water access (optional). Step 1, Choose a spot that won't get washed away. Jiggling the sand helps to drain out the water and create a firmer, more stable shape. Also, avoid picking up anything sharp, dirty or that might house an animal. "I just stumbled upon this awesome article and I just wanted to know how to build a cool sandcastle!" "I just stumbled upon this awesome article and I just wanted to know how to build a cool sandcastle!" If you really can’t stand to see another ad again, then please We use cookies to make wikiHow great. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. What should I do if the moat soaks up the water every time I fill it? {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/22\/Build-a-Sand-Castle-Step-1-Version-3.jpg\/v4-460px-Build-a-Sand-Castle-Step-1-Version-3.jpg","bigUrl":"\/images\/thumb\/2\/22\/Build-a-Sand-Castle-Step-1-Version-3.jpg\/aid641058-v4-728px-Build-a-Sand-Castle-Step-1-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"