Did you know that November is "Academic Writing Month"? If you follow twitter, you can search for #acwrimo to connect to lots of resources to help hone your writing skills. (If you don't follow twitter, this might be a good time to give it a try - you can just paste "#acwrimo" into your search window ).
Here are a few of the fine resources I picked up from the twitter feed - more might follow. Writing is hard, everybody struggles, but, like ice skating, you can learn to do it. The more you practice the better you get, and you can get good faster by learning from others.
Explorations of Style: A blog about academic writing http://explorationsofstyle.com/ (@explorstyle)
Here's a Guardian article about academic writing month (http://www.guardian.co.uk/higher-education-network/blog/2012/nov/01/academic-writing-month-acwrimo-research)
Thesis Whiperer (www.thesiswhisperer.com) ( @thesiswhisperer) blog, including a slideshow on "How to write that journal article in 7 days"