diff --git a/Custom and Distributed Training with Tensorflow/Week 4/data/README.md b/Custom and Distributed Training with Tensorflow/Week 4/data/README.md
index e69de29..6501d3b 100644
--- a/Custom and Distributed Training with Tensorflow/Week 4/data/README.md	
+++ b/Custom and Distributed Training with Tensorflow/Week 4/data/README.md	
@@ -0,0 +1,27 @@
+# Readme Please !!!
+---
+
+In C2W4 Assignment you must have a **test model** so that all cell code can run smoothly.
+
+After I checked the checksum on the week 3 test model it turned out to be the ***same as the week 4*** test model, therefore so that the repo size doesn't get bigger you can copy the week 3 test model to week 4
+
+The path is the same as week 3. Copy the test model here (`data/resnet_50_feature_vector`)
+
+```bash
+.
+├── Custom Models, Layers, Loss Functions with Tensorflow
+│   └── ...
+│       └── ...
+└── Custom and Distributed Training with Tensorflow
+    ├── ...
+    │   └── ...
+    └── Week 4
+        ├── C2W4_Assignment.ipynb
+        ├── ...
+        └── data
+            └── resnet_50_feature_vector
+                ├── saved_model.pb
+                └── variables
+                    ├── variables.data-00000-of-00001
+                    └── variables.index
+```