The only real way to develop your presenting skills is to practice. So let’s book in a presentation into your 2014 calendar.
Does your employer do internal training sessions or regular updates as part of their training programme? If so, why not volunteer to give a presentation to your colleagues on a relevant topic? Quite frequently trainers are looking for internal presenters to plug the gaps between the external / headline speakers.
Personally I hate giving presentations, but if you are well prepared and have researched your topic you will have no problem.