Finally, and most importantly, get comfortable with being short. At the end of the day, nothing you wear will make you taller, and there’s nothing wrong with that. In my opinion, the most ridiculous looking people–whether short, tall, skinny, or fat–are the ones desperate to compensate for their idiosyncracies or pretending to be what they’re not.
Lots of very good casual clothing advice for short guys from Tweed in the City. Whatever you perceive to be your physical shortcomings, wear attractive clothes that fit and you’ll look good.