How To Customize Author Profile In Blogger

1.Login to your blogger dashboard--> Desing- -> Edit HTML

2.Scroll down to where you see ]]></b:skin> tag.

3.Copy below code and paste it just before ]]></b:skin> tag.

.profile-img { 
  float: left; 
  margin: 0 5px 5px 0; 
  padding: 4px; 
  border:3px solid #289728; 
} 
.profile-img:hover { 
  border:3px dotted #3B3A3B; 
} 
.profile-data { 
  margin:0 10px 20px 10px; 
  padding:0; 
  font: bold 10pt "ms sans serif", verdana,Arial; 
  color:#289728; 
  line-height: 1.6em; 
  text-align:left; 
  text-transform:lowercase; 
} 
.profile-data:hover { 
  color:#3B3A3B; 
} 
.profile-datablock { 
  margin:.5em 0 .5em; 
}
.profile-datablock:hover { 
  background: transparent url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiaBJRF8Aq1x0LOJ4bB-QgS2eXn9c8x7FCPmbHB-aSzk_qLtmxoRsnVG4aVf4sFo4gbB1H5NVaJgARW9-XsbVFPKMBctC7tHvqh-xZjdfB3QVDLNo2c5TpP8oJa-52_2edd8VFnqALeIhg/) no-repeat bottom right ; 
}
.profile-textblock { 
  color:#333; 
  margin: 0.5em 0; 
  line-height: 1.6em; 
  padding:5px 0 5px 0; 
  border-top:2px solid #289728; 
  border-bottom:2px solid #289728; 
}
.profile-link { 
display:none; 
}

 4.Now Save Your Template. You are done

Cheers