So what about the default Feedburner email subscription form in Blogger ?? It looks ugly right ?? . Now here you could use CSS to to create Beautiful email and RSS subscription form . An example of such a form is given here on my blog .
What you need is just to change the default code with this code .
<a href="http://feeds.feedburner.com/~e?ffid=2358889"><img alt="feedburner" style="border: 0pt none ; margin-top: 15px;" src="http://i44.tinypic.com/o945yf.jpg"/></a><p><strong><span style="color:#ID9EDD;">Subscribe for Email Updates</span></strong></p><form action="http://www.feedburner.com/fb/a/emailverifySubmit?feedId=2358889" http://www.feedburner.com/fb/a/emailverifysubmit?feedid="2358889" , popupwindow\ );return true target="popupwindow" id="subscribe" onsubmit="window.open(\" scrollbars="yes,width=550,height=520\" style="border:1px solid #fff;padding:0px;text-align:left;" method="post" \><img style="vertical-align:middle;border:0" src="http://i35.tinypic.com/ifv98i.jpg"/> <input ;} enter email onfocus="if (this.value == " value="Enter your email address..." address... type="text" id="subbox" onblur="if (this.value == " ) {this.value = style="width:210px" your name="email"/><input value="http://www.feedburner.com/fb/a/emailverifySubmit?feedId=2358889" name="url" type="hidden"/><input value="Subscribe To Feed" name="title" type="hidden"/><input value="en_US" name="loc" type="hidden"/><input id="subbutton" value="GO" type="submit"/></form><center><a href="http://feeds.feedburner.com/techknowl" target="_blank"><img border="0" width="88" src="http://feeds.feedburner.com/%7Efc/techknowl?bg=99CCFF&fg=444444&anim=0" height="26"/></a></center>Replace the the email subscription URL, feed URL , feed count chiklet code with yours .You can find and replace the font color with this tool . Apply some creativity and design a good subscribe by RSS logo and change it with the tinypic image in the code .