I would like to use semantic mark-up to emphasise each items importance or priority.

Here is an example of what i mean.

```
<ul itemscope itemtype="http://schema.org/ItemList">
  <h2 itemprop="name">Wish List</h2><br>
  <li itemprop="itemListElement">Google glass</li>
  <li itemprop="itemListElement">Galaxy S4</li>
  <li itemprop="itemListElement">MacBook Pro</li>
</ul>

```

I was contemplating using heading tags but I am not sure if this is the correct use. e.g

```
<ul itemscope itemtype="http://schema.org/ItemList">
  <li itemprop="itemListElement"><h6>Least Important</h6></li>
  <li itemprop="itemListElement"><h1>Most Important</h1></li>
</ul>

```

I'm just looking for a little advice on whether there is a CORRECT way of doing this? possibly microdata, microformats or RDFa?