diff --git a/README.md b/README.md
index 3a67953..71ed127 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,6 @@
 
 ## Astable Flip-Flop Circuit
 
-![Astable_Flip-Flop](3D.png)
 <img src="3D.png" alt="PCB" width="500">
 <img src="Astable_Flip-Flop_Circuit_Breadboard.jpg" alt="Breadboard" width="500">
 <br/>
@@ -41,7 +40,8 @@ Example values:
 - 10 kΩ x 10 μF = 0.1s
 - 100 kΩ x 1 μF = 0.1s
 
-J1, J2, J3 are optional. Use them to pick up the square waves and display them on a oscilloscope. J3 is ground.
+> [!NOTE]
+> J1, J2, J3 are optional. Use them to pick up the square waves and display them on a oscilloscope. J3 is ground.
 
 ### PD