diff --git a/README.md b/README.md
index a1e225d0db2f7d48b3c72280729f6aa2c14d9006..dc2feaf78dcf23ea762640f454907f557dc450a1 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 2020-1, Computer Graphics (F030-1, Prof. Hwanyong Lee) \
 201721097 media Jiyoung Moon 
 
-## this is the content that teaching how to transform camera using mouse dragging.
+## This is the content that teaching how to transform camera using mouse dragging.
 
 Before we start this tutorial, students should prepare the basic code of self rotating 3d cube.\
 The example of the first code will be shown the first part.\
@@ -15,6 +15,7 @@ There are 3 steps in this tutorial.
 ## Step 0. Before we start! You have to prepare...
 
 In this part, I'll show a example code of self-rotating 3d cube and a example output of it.\
+[](https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/blob/master/self-rotating-cube.gif)\
 This code is used for the next steps.
 
 ## Step 1. Remove some codes.
@@ -31,12 +32,14 @@ With some gif files and code, students can understand it easily.
 In this part, we make the codes for the mouse dragging.\
 This is related to the `addEventListener` of HTML DOM event and JS.\
 We make 3 functions with describtion of them.\
-Also, in this part, there are some parts that could be hard to understand, so I add a gif so that the students can understand it well.
+Also, in this part, there are some parts that could be hard to understand, so I add a gif so that the students can understand it well.\
+[](https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/blob/master/description.gif)
 
 ## Step 4. It's done!!! Try it!!!
 
 At the end, the students can make his/her own mouse dragging tranformation of camera.\
-Also, the students can try mouse dragging to transform camera.
+Also, the students can try mouse dragging to transform camera.\
+[](https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/blob/master/final.gif)
 
 ## Result