Need Help 301 redirected domains
 

Actually I have a new domain with 301 redirected to old domain. As u can see in the blew.
301 redirect

New http://candle-warmer.net To Old http://www.scentsforcandles.com/

I have to work on new domain which is redirected to old one but I, m curious that How new domain can be optimized even new domain is not existing in google while old one is existing well in search results.

1: How it can be optimized?
2: What would you suggest in optimization strategy?
3: If I optimize new domain it would get rank with the keyword �my target keywords�?
4: If I optimize new domain which domain would get rank New or Old one?