1) This is a 125 x 125 square. Most common size used on most blog sidebars. Use the code below and paste where you want button to appear.
Code for KCST on ETSY:
<a href="http://www.etsy.com/teams/12446/kawaii-cuteness-street-team" target="_blank"><img src="http://i195.photobucket.com/albums/z50/druansha/blogger/badge.png" border="0" alt="KCST"></a>
Code for KCST Blog:
<a href="http://kawaii-cuteness-street-team.blogspot.com" target="_blank"><img src="http://i195.photobucket.com/albums/z50/druansha/blogger/badge.png" border="0" alt="KCST"></a>