Hi Anmol, You can upload image as an attacment to the object as follows

To show the photo you have use a formula field on that object and then expose that field on the vf page as normally we do  , use  formula

IMAGE("https://c.ap1.content.force.com/servlet/servlet.FileDownload?file=" & AttachmentId__c , "No Attachments",100,100)

the link is hardcoded link which will point to the location where the salesforce stores the attachment

where 100,100 are the size of image

you can upload the image as follows , its the complete code you will find the upload code in it.

----Controller-----

public class insertmyCandidateController {
public Candidate__c candidate { get; private set; }
public blob Photo {get;set;}
public String contentType {get; set;}
public String fileName {get; set;}
public insertmyCandidateController() {
Id id = ApexPages.currentPage().getParameters().get('id');

candidate = (id == null) ? new Candidate__c() :[SELECT email__c FROM Candidate__c WHERE Id = :id];
}
public PageReference save(){
try {
upsert(candidate);
} catch(System.DMLException e) {

return null;
}
//for the upload 
if (Photo != null) {
Attachment attach = new Attachment();
attach.Body = Photo;
attach.Name =candidate.email__c+'.jpg';
attach.ContentType = contentType;
attach.ParentId = candidate.id;



try {
insert(attach);
candidate.attachmentid__c=attach.Id;
update(candidate);
} catch(System.DMLException e) {
ApexPages.addMessages(e);
return null;
}
}   
           PageReference page = new PageReference('/apex/profile?id='+candidate.id);
        page.setRedirect(true);
        return page;
}
}