Hunnyoil,
This month it will be exactly 2 years since I've graduated. I have not taken the national certification yet. It's on my To Do list for this year though. I'm a bit nervous about it. But I did well in school. I'm just gonna review, review, review. I know it's costly but if you don't pass on your first try you can take it again.
You've already learned this stuff, you just need to call it all back to mind. Remember to breath and stay calm and it'll come rushing back. And well, reviewing helps too!
Keep us posted!
Steph!