How do i play lady Macbeth's sleep walking scene?please urgent help needed!!?

as for stage fright there is no cure really you just have to do it even though your as scared as a mouse in a cats foodbowl. ive never played lady mcbeth i did a monologue of her once but so long ago and i also get so mixed up about which mad old woman is which in shakepeares plays. breathing is really important though cos if your nervouse you tend to hold your breath and then you can get out of breath and flustered or high pitched. so even though your terrified u can pretend you know exactly what your doing. make sure you know what your lines mean too shakespear can be hard to communicate because if you dont understand what your saying neither will the audience. go through your linees and put them into your own words as you would say them or as your mom might if your a younger person. then go back to the lines and say them as they are written but with the idea in your head of what you would say if you were just an ordinary person. that way you really get to understand what she is on about and when you say the lines people will understand them. as for atmosphere....a bit airy space doesnt sound too bad. she is in a sparse catle right? so that would be pretty cold like a lobby and you can use that sterile environment to your advantage.if you have a lighting person you could ask them to do something with the lights to help you get in the mood. try it out as much as you ccan in the space itself even just when your walking through imagine the lobby as it will be on the night and if its full of people say some of your lines out loud. an audience wont ever be as bad as a lobby full of students who will think you have gone mad! so if you can do that then the audience will be easy!!!! good luck and break a leg