I have been working on a button for hours. Silly, I know!
I found a free photo editor online. To created the graphics, I used Power Point. Once the button was how I desired, I uploaded the image to imgur. The code below is what you'll need to create the linkable button.
<center><a href="http://YOUR WEB ADDRESS/" target="_blank" title="BLOG TITLE"><img alt="BLOG TITLE" src="http://IMAGE WEB ADDRESS"/></a> <center></center><center><textarea id="code-source" rows="3" cols="13" name="code-source"><center><a href="http://YOUR WEB ADDRESS/"><img border="0" src="http://IMAGE WEB ADDRESS"/></a></center></textarea></center>
Don't forget to fill in the red, blue, and green components of the code with your web addresses and blog title. To add a button to your sidebar, you'll need to open your account options in your blog design and add the html gadget.