Step 1:
Log in to your Blogger Dashboard and Navigate to Layout > Edit HTML and checked the Expand Widget Templates Check box.
Step 2:
Find the highlighted code below and Replace it with code next to it:
- Replace <data:newerPageTitle/> for Next Post with <img src='YOUR-IMAGE-LINK' alt='Next Post' />
- Replace <data:olderPageTitle/> for Older Post with <img src='YOUR-IMAGE-LINK' alt='Previous Post'/>
- Replace <data:homeMsg/> for Homepage with <img src='YOUR-IMAGE-LINK' alt='Home' />
Hope this post will be helpful for all blogger newbies. If you need any other customization then feel free to ask in comment form below.