I am trying to create a case external page that allows for me to use the standard controller with an extension so that they are able to add an attachment if they are wanting to. I had it where it wouldn't upload the attachment and now it will only upload the attachment and leaves all of the data alone. Anyone know of a way for it to do both?

VF Page:

<apex:page standardController="Case" extensions="caseattachment">
    <apex:form id="frm">
        <apex:pageBlock title="New Salesforce Case">
            <apex:pageBlockSection columns="1"  title="Salesforce Case -- Red lines represent required fields." collapsible="false">
            </apex:pageBlockSection>
            <strong>Please click the lookup icon (small button to right of field) to search name selection from Salesforce lookup dialog.</strong>
            <apex:pageBlockSection columns="1">
               <apex:inputField value="{!Case.Requestor_Name__c}" required="true"/>
               <br></br>
               </apex:pageBlockSection>
            <strong>Select Problem and High Priority ONLY if the issue is preventing you from continuing work in Salesforce.</strong>
            <apex:pageBlockSection columns="1">
               <apex:inputField value="{!Case.Type}" required="true"/>
               <apex:inputField value="{!Case.Priority}" required="true"/>
            </apex:pageBlockSection>
            <apex:pageBlockSection columns="1" title="Case Details" collapsible="false">
               <apex:inputField value="{!Case.Department__c}" required="true"/>
               <apex:inputField value="{!Case.Salesforce_Object__c}" required="true"/>
               <apex:inputField value="{!Case.Description}" required="true" style="width:50%; height: 60px" />
            </apex:pageBlockSection>
            <apex:pageBlockButtons >
               <apex:commandButton action="{!save}" value="Submit"/>
               <apex:commandButton action="{!cancel}" value="Cancel"/>
           </apex:pageBlockButtons>
        <apex:pageBlockSection title="Upload the Attachment" collapsible="false" dir="LTR" columns="1">
        <div id="upload" class="upload">                                   
            <apex:inputFile id="fileToUpload" value="{!fileBody}" filename="{!fileName}" styleClass="input-file"/>                            
        </div>
        </apex:pageBlockSection>
       </apex:pageBlock>
    </apex:form>
</apex:page>

Apex Class: 

public class caseattachment
{
public case objcase{get;set;}
public Attachment myAttachment{get;set;}
public string fileName{get;set;} 
public Blob fileBody{get;set;}

    public caseattachment(Apexpages.standardcontroller controller)
    {
        objcase = new case();
        myAttachment =new Attachment();
    }
    public pagereference save()
    {
        insert objcase;
        System.debug('@@@@@fileBody'+fileBody);     
        myAttachment  = new Attachment();
              Integer i=0;
              myAttachment .clear();
              myAttachment.Body = fileBody; 
              myAttachment.Name = 'Logo_'+objcase.id+'.jpeg' ; 
              myAttachment.ParentId = objcase.id;             
              insert myAttachment;                 
        pagereference pr = new pagereference('/'+objcase.id);                           
        return pr;
    }
}

Anyone know what I am doing wrong?