Hey.  When you hit a table or another big jump like that, it might not be you.  I know there's a really inconsistant table where i ride, and it's sometimes really hard to hit right because of the approach. (this also might have to do with the boarder to skier ratio being like 200-5)
Also, don't be a wussy.  I know it sounds harsh, but i remember when i first started, i was always burning off speed and not jumping off the lip.  Dont worry about it, chances are you'll do way better if you max out and smash it!