diff --git a/README.md b/README.md
index 9675384..89d170f 100644
--- a/README.md
+++ b/README.md
@@ -17,12 +17,12 @@ This Git repository contains my C++ implementation of the Ray Tracer Challenge.
 
 The Web Site of the book: http://raytracerchallenge.com/
 
-# Output
-### Chapter 05
-![chapter_05](data/chapter_05.png)
+# Gallery
 
-### Chapter 06
-![chapter_06](data/chapter_06.png)
+| Chapitre 05           |  Chapitre 06          |
+| :-------------------: | :-------------------: |
+| (data/chapter_05.png) | (data/chapter_06.png) |
 
-### Chapter 07
-![chapter_07](data/chapter_07.png)
+| Chapitre 07           |  Chapitre 08          |
+| :-------------------: | :-------------------: |
+| (data/chapter_07.png) | (data/chapter_08.png) |
diff --git a/apps/chapter_05.cpp b/apps/chapter_05.cpp
index ae5d13c..f3cfdbe 100644
--- a/apps/chapter_05.cpp
+++ b/apps/chapter_05.cpp
@@ -32,7 +32,7 @@
 
 /* ------------------------------------------------------------------------- */
 
-#define kImageSize 100
+#define kImageSize 250
 #define kWallSize  7.0
 #define kWallZ     10
 
diff --git a/apps/chapter_06.cpp b/apps/chapter_06.cpp
index 6234363..b94e817 100644
--- a/apps/chapter_06.cpp
+++ b/apps/chapter_06.cpp
@@ -32,7 +32,7 @@
 
 /* ------------------------------------------------------------------------- */
 
-#define kImageSize 100
+#define kImageSize 250
 #define kWallSize  7.0
 #define kWallZ     10
 
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diff --git a/data/chapter_06.png b/data/chapter_06.png
index f8b342e..4ec10f3 100644
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diff --git a/data/chapter_08.png b/data/chapter_08.png
new file mode 100644
index 0000000..59ae29a
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