Sure that won't be a problem:
1.) I have added the code like is shown on the picture (black box around it) into the functions.php of the child theme (BFWide, BFNav) Than I have overwritten the original file by uploading it to own hosting server (via FTP)(Do not forget to create a backup of that file firstly). The picture says probably more:

2.) I have created page called "infobox" and write the "example infobox" code that vfxdude (thanks) has posted here. I have little bit edited it into this form:
<div class="box">
<h6>ABOUT THE AUTHOR</h6>
<ul class="pointerlist mb0"> <*img class="alignleft" src="http://yourlinktothepicture.jpg" alt="" width="92" height="92" />
<*li>Hi! I'm Jan, more known as DJ Tukancheez or Tuki.<*/li>
<*li>I'm a student, mix producer, mixfan and the blogger.<*/li>
<*li><*/li>
<*li> Please help me to spread my own mixes, by following my person on Twitter @tukancheez. Thank you !</*li>
<*/ul>
</div>
PLEASE REMEMBER, ALL "*" (stars) INSIDE THIS CODE NEEDS TO BE DELETED!
(picture of you is aligned to the left, like the code says)
THE RESULT:

The points of the li tag are hidden behind the image, thats why it looks on my page, how it looks like.
Hope it helps you.
P.S. I hope the post will be shown correctly? Ahhh, after 10th edit it is O.K. =]