Cisco Packet Tracer project, configuring GRE over IPsec and OSPF virtual link.

Hi there, I have to do a Cisco Packet Tracer project for school, I have to write a report so don't have time to do this task. OSPF routing protocol to communicate with head office and branch offices. There needs to be 1 head office which will be in area 0. There will be 3 branch offices, 1 branch office will be in area 1 and the other office in area 2. (area 1 and 2 branch office are connected to backbone area 0). The head office and 2 branch are connected to internet router (ISP router). The head office (HO) router will be in the middle and the area 1 branch router will be on the left side of the HO. area 2 branch on the right side of the HO. know configure GRE over IPsec tunnel from area 1 branch to the HO and again GRE over IPsec form area 2 branch to the HO. Next configure OSPF virtual link from third branch which will in area 3 (or what area you want). The area 3 will not directly connect to the area 0 (backbone area), therefore would need to configure OSPF virtual link which will virtually connect area 3 to area 0. Need to do basic configuration of switch, ospf, pc, routers, etc. All the routers needs to successful communicate with each other. PC's needs to ping with other PC's. I have attached a image which will be helpful for you to understand how I want the network diagram. And please take screenshots when configuring GRE over IPsec and OSPF virtual link. Thank you