Hi, I know how you feel! My first paper for a conference I left until 6pm on the date it had to be submitted by, then had to do it in a panic. It all turned out fine though, they came back to me and asked to change a few things and then if was published in their proceedings. Make a plan with the objectives of the paper and what you want to say and just keep chipping away at it. Get others to read it too if poss, I find feedback from friends good as it is usually constructive. Good luck,