How you would prepare for an acting Role?

了解自己劇本講咩...
再了解自己個角色,,睇下同自己本身個性格似唔似...
似的話,,,可以演回自己..
唔似的話,,,可以睇下d fd有冇d係似似地ge..
再係佢地身上搵d共通點黎演繹...
多d望鏡練習,,睇下自己有冇唔自然牙,,奇怪牙...之類...
從而改善~
講熟對白,,用感情去講,,多講係會對你講台詞時減少食[羅絲]ge機會~
最緊要ge係你要原全投入角色...
咁人地睇你都會得到共鳴 =)

first of all, you MUST be familiar with the lines!!!! Before you do anything!
Then, understand what the character is doing, try to think in his/her shoes.
For example, he was trying to argue with someone. You have to think why he wants to do that, what he wants to get from the arguement, and how he was feeling.
Get into the feelings and the eagerness of the character.

If you are performing on stage, make sure you ENLARGE wt u do. Enlarge, not exagerate, because for a stage, your audiance is far from u and u huv to enlarge your movements so they can see you, know wt you are doing better.