Hello, your question should be, "Do these sentences sound natural to you? If not, how would you write these sentences?" I would write the sentences as follows: Hi! I have some good news for you! I am thinking of signing up for an acting class at Margie Haber Studio. Should I acquire basic acting skills before I apply? Do you know whether they welcome new actors?

Hello, I'd change a few things so it has more flow. The changes are in brackets :) I have (some) good news for you! I'm thinking of taking (an) acting class(no s) at the Margie Haber Studio. Should I learn (some basic acting skills) before I apply? Do you know if they welcome (new) actors? I hope this helps :D

That's great. I would probably say 'new' actors, but the word 'fresh' is OK too.