Alvin, if you are working as a retail loan officer for a direct lender, your number one priority should be to learn all your lender's products and guidelines so that you know them on the back of your hand. Your main job is not to "broker deals out", it is to sell your bank's products. So I would focus on what your bank can do and not what everybody else can do (if so you need to work for a broker.) You must worry about your bank's u/w guidelines and turn around time and make sure you can deliver any promise that you make.
Being an AE (wholesale) and being a loan officer (retail) are two different things. To become great as a retail loan officer, I would suggest that you talk to other great retail loan officers and learn from them. Asking an AE how to be a great loan officer makes no sense to me, especially when most have never done retail.
Just my 2s.