title: Drawing as input for HIT on Amazon Mechnical Turk
body: <p>I'm using Amazon's Mechanical Turk for the first time and am attempting to create a HIT that involves the worker submitting a drawing. I've created a test HIT using the below code, but received a message from a worker explaining they weren't able to submit it.</p>
  
  <pre><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"&gt;    &lt;/script&gt;&lt;script src='http://intridea.github.io/sketch.js/lib/sketch.js'&gt;    &lt;/script&gt;
  &lt;p&gt;Imitate a painting with a landscape as its subject given the limiting drawing tool available. Intricate drawings will be rewarded a bonus!&lt;/p&gt;
  
  &lt;div class="demo" id="colors_demo"&gt;
  &lt;div class="tools"&gt;&amp;nbsp;&lt;/div&gt;
  &lt;canvas height="500" id="colors_sketch" width="800"&gt;&lt;/canvas&gt; &lt;script type='text/javascript'&gt;
          $(function() {
            $.each(['#f00', '#ff0', '#0f0', '#0ff', '#00f', '#f0f', '#000', '#fff'], function() {
              $('#colors_demo .tools').append("&lt;a href='#colors_sketch' data-color='" + this + "' style='width: 10px; background: " + this + ";'&gt;&lt;/a&gt; ");
            });
            $.each([3, 5, 10, 15], function() {
              $('#colors_demo .tools').append("&lt;a href='#colors_sketch' data-size='" + this + "' style='background: #ccc'&gt;" + this + "&lt;/a&gt; ");
            });
            $('#colors_sketch').sketch();
          });
        &lt;/script&gt;&lt;/div&gt;
  
  &lt;form action="submit"&gt;This is a drawing of:&lt;br /&gt;
  &lt;input name="drawingof" type="text" value="" /&gt;&amp;nbsp;&lt;/form&gt;
  </code></pre>
  
  <p>Aside from the issue of not being able to submit, will a drawing someone creates on the above canvas be saved/carried over when they submit? Or, alternatively, do I need to come up with a method that involves saving a file and uploading/emailing?</p>
  
  <p>Any suggestions for methods of having workers submit drawings are very much appreciated.</p>