I made this tutorial after Wade's request, it's meant to help beginners at making icons for submissions that lacks it. The tutorial itself isn't anything special, it just does the work.
Topic link : http://www.newgrounds.com /bbs/topic.php?id=593613
Icon making link : http://www.newgrounds.com /iconhelpers.php
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Update 1.1 : thanks to Bezman, now all the interface screenshots are in english.