Hi Rob@:try with this plugin Tweet This.you can set your custom image also.:)
or
Try this code…
Open the sidebar.php
Locate the “twitter-feed” div
<div class=”twitter-feed”>
<h2>What I’m up to…</h2>
<ul id=”twitter_update_list”></ul>
<script type=”text/javascript” src=”http://twitter.com/javascripts/blogger.js”></script>
<script type=”text/javascript” src=”http://twitter.com/statuses/user_timeline/JunLoayza.json?callback=twitterCallback2&count=1″></script>
<div class=”follow-on-twitter”>
<a rel=”nofollow” href=”">Follow me on Twitter</a>
</div>
</div>
Replace with Twitter username
<script type=”text/javascript” src=”http://twitter.com/statuses/user_timeline/AddYourUsernameHere.json?callback=twitterCallback2&count=1″></script>
Now you will want to add your twitter URL to the “Follow me on Twitter” link. The following code is listed in blue above:
<a rel=”nofollow” href=”http://Twitter.com/AddYourUsernameHere“>Follow me on Twitter</a>
The final code
<div class=”twitter-feed”>
<h2>What I’m up to…</h2>
<ul id=”twitter_update_list”></ul>
<script type=”text/javascript” src=”http://twitter.com/javascripts/blogger.js”></script>
<script type=”text/javascript” src=”http://twitter.com/statuses/user_timeline/AddYourUsernameHere.json?callback=twitterCallback2&count=1″></script>
<div class=”follow-on-twitter”>
<a rel=”nofollow” href=”http://Twitter.com/AddYourUsernameHere“>Follow me on Twitter</a>
</div>
</div>
save and run 🙂