Other than the seemingly compulsory 'write' there's little I can think to offer.
The process of writing can differ so much between writers that while the technical elements may be the same - and William Strunk, Jr.'s The Elements of Style is a good book to ensure you understand the basics - you'll have to find your own way of working. The best way to do so is to write and see what feels right for you.
If what you've written doesn't feel as good as you'd like, then that's okay. It likely won't be, and the fact you can see it isn't means you've an idea what needs changing. Revision is when you shape and hone the work, and where you should spend the most time.