diff --git a/binary-tree.ipynb b/binary-tree.ipynb
index 0079636..2f7bbb7 100644
--- a/binary-tree.ipynb
+++ b/binary-tree.ipynb
@@ -453,7 +453,9 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Matrice de confusion set de test originale"
+    "## Confusion Matrix Visualization\n",
+    "\n",
+    "### Default test set"
    ]
   },
   {
@@ -491,7 +493,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Matrice de confusion set 80/20"
+    "### Manually splitted test set (80/20) "
    ]
   },
   {
diff --git a/cnn-doc.md b/cnn-doc.md
new file mode 100644
index 0000000..b9e7709
--- /dev/null
+++ b/cnn-doc.md
@@ -0,0 +1,7 @@
+# CNN - Convultional Neural Network :brain:
+
+
+
+
+## Summary of CNN steps (example)
+![alt text](image.png)
\ No newline at end of file
diff --git a/image.png b/image.png
new file mode 100644
index 0000000..a8461eb
Binary files /dev/null and b/image.png differ