diff --git a/public/main/template/default/gradebook/custom_certificate.html.twig b/public/main/template/default/gradebook/custom_certificate.html.twig
index 8ad3dde59e..32c4ca7d67 100644
--- a/public/main/template/default/gradebook/custom_certificate.html.twig
+++ b/public/main/template/default/gradebook/custom_certificate.html.twig
@@ -8,12 +8,12 @@
 <table border="0" cellpadding="0" cellspacing="0">
     <tr>
         <td colspan="3">
-            <img src="{{ theme_asset_base64('images/cuadro.png') }}">
+            <img src="{{ theme_asset_base64('images/square.png') }}">
         </td>
     </tr>
     <tr>
         <td>
-            <img src="{{ theme_asset_base64('images/cuadro.png') }}">
+            <img src="{{ theme_asset_base64('images/square.png') }}">
         </td>
         <td>
             <table border="0" bgcolor="#92c647" cellpadding="0" cellspacing="0" align="center" width="100%">
@@ -116,12 +116,12 @@
             </table>
         </td>
         <td>
-            <img src="{{ theme_asset_base64('images/cuadro.png') }}">
+            <img src="{{ theme_asset_base64('images/square.png') }}">
         </td>
     </tr>
     <tr>
         <td colspan="3">
-            <img src="{{ theme_asset_base64('images/cuadro.png') }}">
+            <img src="{{ theme_asset_base64('images/square.png') }}">
         </td>
     </tr>
 </table>
diff --git a/var/themes/chamilo/images/header_top.png b/var/themes/chamilo/images/header_top.png
new file mode 100644
index 0000000000..96c5c9dfa6
Binary files /dev/null and b/var/themes/chamilo/images/header_top.png differ
diff --git a/var/themes/chamilo/images/lado-a.png b/var/themes/chamilo/images/lado-a.png
new file mode 100644
index 0000000000..0a018aa75b
Binary files /dev/null and b/var/themes/chamilo/images/lado-a.png differ
diff --git a/var/themes/chamilo/images/lado-b.png b/var/themes/chamilo/images/lado-b.png
new file mode 100644
index 0000000000..aefb9f1366
Binary files /dev/null and b/var/themes/chamilo/images/lado-b.png differ
diff --git a/var/themes/chamilo/images/lado-footer.png b/var/themes/chamilo/images/lado-footer.png
new file mode 100644
index 0000000000..821434b2e2
Binary files /dev/null and b/var/themes/chamilo/images/lado-footer.png differ
diff --git a/var/themes/chamilo/images/lado-header.png b/var/themes/chamilo/images/lado-header.png
new file mode 100644
index 0000000000..302c9ac4d3
Binary files /dev/null and b/var/themes/chamilo/images/lado-header.png differ
diff --git a/var/themes/chamilo/images/square.png b/var/themes/chamilo/images/square.png
new file mode 100644
index 0000000000..4956240ccb
Binary files /dev/null and b/var/themes/chamilo/images/square.png differ