diff --git a/session-2/awsops.py b/session-2/awsops.py
index c2b6ec3..880331e 100644
--- a/session-2/awsops.py
+++ b/session-2/awsops.py
@@ -47,7 +47,6 @@ def create_nat_gateway(self, subnet_id, eip):
         )
         return response['NatGateway']['NatGatewayId']
 
-
     def wait_for_nat_gateway(self, nat_gateway_id):
         """ Use waiter method to wait till the nat gateway is ready """
         waiter = self.ec2.get_waiter('nat_gateway_available')
@@ -62,6 +61,11 @@ def wait_for_nat_gateway(self, nat_gateway_id):
             }
         )
 
+        try:
+            response = self.ec2.create_nat_gateway(AllocationId='eip')
+            return response['NatGatewayId']
+        except ClientError as error:
+            logging.error(error)
 
     def create_subnet(self, cidr):
         """  Get availability zone, cidr and vpc id
diff --git a/session-2/config.py b/session-2/config.py
index 4685c55..a31c3cb 100644
--- a/session-2/config.py
+++ b/session-2/config.py
@@ -6,4 +6,5 @@
     PUBLIC_TAG: "10.24.0.0/23",
     PRIVATE_TAG: "10.24.2.0/23"
 }
-DESTINATION = "0.0.0.0/0"
\ No newline at end of file
+DESTINATION = "0.0.0.0/0"
+CIDR="10.24.0.0/16"
\ No newline at end of file
diff --git a/session-2/natgateway.py b/session-2/natgateway.py
index a59b4f1..cfc76e9 100755
--- a/session-2/natgateway.py
+++ b/session-2/natgateway.py
@@ -9,12 +9,12 @@ def main():
     args = parser.args_parser()
     aws = awsops.AwsOperations(args)
     allocate_id = aws.allocate_address()
-    subnet_id = aws.get_subnet_id(get-the-correct-tag-from-config)
+    subnet_id = aws.get_subnet_id(config.PUBLIC_TAG)
     nat_gateway_id = aws.create_nat_gateway(subnet_id, allocate_id)
+    aws.wait_for_nat_gateway(nat_gateway_id)
     #use function wait_for_nat_gateway to wait till the nat gateway is in available state
     print(nat_gateway_id)
 
 
 if __name__ == '__main__':
     main()
-
diff --git a/session-2/routes.py b/session-2/routes.py
index 7ee1db4..a0e776b 100755
--- a/session-2/routes.py
+++ b/session-2/routes.py
@@ -13,6 +13,11 @@ def main():
     aws.add_internet_gateway_route(route_table_id, config.DESTINATION)
     subnet_id = aws.get_subnet_id(config.PUBLIC_TAG)
     aws.associate_route_table(route_table_id, subnet_id)
+    private_route_table_id = aws.create_route_table()
+    aws.create_tags(private_route_table_id, config.PRIVATE_TAG)
+    private_subnet_id = aws.get_subnet_id(config.PRIVATE_TAG)
+    aws.associate_route_table(private_route_table_id, private_subnet_id)
+    aws.add_nat_gateway_route(private_route_table_id, config.DESTINATION, config.CIDR)
     # create private route table
     # create tags for the private route table
     # get private subnet id
diff --git a/session-2/subnets.py b/session-2/subnets.py
index 4f5e5b9..08852e0 100755
--- a/session-2/subnets.py
+++ b/session-2/subnets.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python3
+"""
+This module creates public and private subnet.
+"""
 
 import awsops
 import parsing
@@ -6,16 +9,22 @@
 
 
 def main():
+    """
+    This function create a private and a public subnet
+    """
     parser = parsing.Parsing()
     args = parser.args_parser()
     aws = awsops.AwsOperations(args)
     public_cidr = config.MAPPING[config.PUBLIC_TAG]
     subnet_id = aws.create_subnet(public_cidr)
     aws.create_tags(subnet_id, config.PUBLIC_TAG)
-    # get private subnet cidr	
+    private_cidr = config.MAPPING[config.PRIVATE_TAG]
+    private_subnet_id = aws.create_subnet(private_cidr)
+    aws.create_tags(private_subnet_id, config.PRIVATE_TAG)
+    # get private subnet cidr
     # create private subnet
     # tag the private subnet
 
 
 if __name__ == '__main__':
-    main()
+    main()
\ No newline at end of file