XML Validation : the element 'order' in namespace 'ordersSchema' has invalid child element 'deliveryAddress'

i need to make a XSD file that validate's a certain XML file i think am on good path but i got stuck i have been looking at my code for days and got lost so now am looking for some one that can look at my code with new view , i included my Schema where i need to change the code

the message i get : the element 'order' in namespace 'ordersSchema' has invalid child element 'deliveryAddress'. List of possible elements expected : 'deliveryAdress' in namespace 'OrdersSchema'

<?xml version="1.0"?>
<schema xmlns="http://ift.tt/tphNwY"
    xmlns:os="OrdersSchema"
    targetNamespace="OrdersSchema"
    elementFormDefault="qualified"
    attributeFormDefault="unqualified">
<element name="orders"    type="os:orders"/>
<complexType name="orders">
<sequence>
  <element name="order" type="os:order" maxOccurs="unbounded"/>
</sequence>
</complexType>
<complexType name="order">
<sequence>
   <element name="deliveryAddress">
    <complexType>
      <sequence>
        <element name='line1' type='os:lineType'/>
        <element name='line2' type='os:lineType'/>
        <element name='line3' type='os:lineType'/>
        <element name='line4' type='os:lineType' minOccurs='0'/>
      </sequence>
      <attribute name="orderId" type="string" use="required" >
      </attribute>
      <attribute name="type" type="os:typeType" use="required"/>
    </complexType>
    <unique name="uniqueOrderIdPerOrder">
      <selector xpath="os:order"/>
      <field xpath="orderId"/>
    </unique>
  </element>
  <element name='items'>
    <complexType>
      <attribute name='productId' type='os:productIdType'/>
      <attribute name='quantity'>
        <simpleType>
          <restriction base='positiveInteger'>
          </restriction>
        </simpleType>
      </attribute>
    </complexType>
  </element>
  <element name='note' minOccurs='0' type='string'/>
</sequence>
</complexType>
<simpleType name='lineType'>
<restriction base='string'>
  <minLength value='1'/>
</restriction>
</simpleType>
<simpleType name='typeType'>
<restriction base='string'>
  <enumeration value='standard'/>
  <enumeration value='express'/>
</restriction>
</simpleType>
<simpleType name='productIdType'>
<restriction base='string'>
<pattern value='(?i)p[-\s](150|1[0-4][0-9]|[[1-9][0-9]|[1-9])\.[a-z][a-z][a-z][a-z][a-z][a-z]'/>
  <pattern value='A...+[$XYZ]\b'/>
</restriction>
</simpleType>

This is the XML file if any one is willing to try it out

<?xml version="1.0" encoding="utf-8" ?>
<os:orders xmlns:os="OrdersSchema">
  <os:order orderId="ord0001" type="standard">
    <deliveryAddress>
  <line1>5, Elmstreet</line1>
  <line2>90210 Beverly Hills</line2>
  <line3>California</line3>
    </deliveryAddress>
    <items>
      <item productId="P 150.aabaac" quantity="5" />
    </items>
    <note>Deliver after 5 pm.</note>
  </os:order>
  <os:order orderId="ord0003" type="express">
    <deliveryAddress>
      <line1>Voskenslaan 30</line1>
      <line2>BE9000 Gent</line2>
      <line3>Oost-Vlaanderen</line3>
      <line4>Belgium</line4>
    </deliveryAddress>
    <items>
      <item productId="A3546sdfsdf6546sdf654Z" quantity="10" />
      <item productId="p 149.SLKDOZ" quantity="5" />
      <item productId="P 100.xcvZEr" quantity="15" />
    </items>
  </os:order>
  <os:order orderId="ord0002" type="express">
    <deliveryAddress>
      <line1>Voskenslaan 32</line1>
      <line2>BE9000 Gent</line2>
      <line3>Oost-Vlaanderen</line3>
      <line4>Belgium</line4>
    </deliveryAddress>
    <items>
      <item productId="P-99.ruioze" quantity="15" />
      <item productId="A123qze46548X" quantity="50" />
      <item productId="P 1.sqmfze" quantity="1" />
      <item productId="AoknY" quantity="20" />
    </items>
    <note>This is <b>very urgent</b> !</note>
  </os:order>
</os:orders>