readme update

Author: subrat611

README.md

@@ -1,6 +1,18 @@
 ## Leetcode Tree Visualizer
 
-Do not dry run your test cases in your mind, visualize it!😉
+Don't just run your test cases through your mind, visualize them instead! 😉
+
+### Decoding characteristics of tree
+
+- Drawing 2D tree graphic using HTML `canvas`.
+
+### Representing/rendering node logic
+
+- A node in canvas represent with these propertites `width`, `hight`, `point (x,y)`, `radius` and the node `value`.
+
+  ![node-propertites](https://github.com/subrat611/leetcode-tree-visualizer/assets/77252075/985e203a-572f-4049-b947-4f06194ff1cf)
+
+  ![image](https://github.com/subrat611/leetcode-tree-visualizer/assets/77252075/555648b9-17e1-47d1-ae83-6666001b7eb3)
 
 ### 🔨 Technologies