Pass form to directive

I want to encapsulate my form fields in a directive so I can simply do this:

<div ng-form='myForm'>
  <my-input name='Email' type='email' label='Email Address' placeholder="Enter email" ng-model='model.email' required='false'></my-input>

</div>

How do I access the myForm in my directive so I can do validation checks, e.g. myForm.Email.$valid?