diff --git a/hello_app/app.py b/hello_app/app.py
index 8b13789..47c53e6 100644
--- a/hello_app/app.py
+++ b/hello_app/app.py
@@ -1 +1,22 @@
+###---------------------Step 1: import Flask variable-------------------------------------------####
+
+
+
+###---------------------Step 2: create flask app -----------------------------------------------####
+
+
+
+
+###----------------------Step 3: set route -----------------------------------------------------####
+
+
+
+
+###-----------------------Step 4: Your controller function--------------------------------------####
+
+
+
+
+
+###-----------------------Step 5: Run main program ---------------------------------------------####