How increase my cps ?

Clicking methods you should try:

• [Easy] Butterfly Clicking - Alternate keypressws between both fingers
  
• [Medium] Jitter Clicking - Spasm your wrist to press the click button extremely fast
  
• [Hard] Drag Clicking - Drag your finger across the click button to perform multiple clicks fast.
  

The key to them all is practice and more practice. Happy clicking!