I'm filing for full custody of my 16 year old daughter in Clallam County WA, what documents need to be filed.

Do you mean sole custody? What custody-legal,physical or both of them?
Is there a previous custody order?

Have a look here:
Washington State Courts - Court Forms - Modification of Parenting Plan/Residential Schedule (http://www.courts.wa.gov/forms/index.cfm?fa=forms.contribute&formID=32)