Add a Custom Feature Thumbnail in Blogger Posts

1 : First go to Blogger.com and login to your account
2 : Then go further for post new or old which you want to update with a new Custom Thambnail.
3 :Now Add a Photo in Blog Which you want to make As a Thumbnail.
suppose i want the above one.
4 : That's it. But Sometimes this is not enough i mean it needs something special Codes.

<img src=”image-URL” style=”display:none;”>

5 : After that Copy Image Url for this just right click and Copy image Address.
6 : Click on html codes top of the page first

place copied earlier html codes to top of the page.

Paste Here.

And Then Paste the copied image address between in commas.

Customize it According to Your Choice. I am Going To Add the below one image address.     <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGRcM8R4E9EsvT57vwPOhqtao1cL1t9M-CgbnE7hwBVynpqqGuMQ8adv6DQNh00h196nF20YM5WkTSdqzTESof5MfKdqP97r8ysgCtIoMtp0mzxDL63bZl4a25LEK9LXZyqyhOkP7_x9I/s1600/ice_screenshot_20190701-191802.png