Create a chain of communication.
Make sure you have the project managers preffered way of commuication, this garuantees a way to share ideas, plans, problems and helps the project manager transfer any message you have to other people that re involved in the construction. This allows you to sleep easy knowing that all your needs are going to be met to their best standard.
Keep the plans near
Make sure once a shape begins to build for your new home that you visit often,and keep the plans for your new home near by and keep looking at them. There is a plan set in place for your home from the begginning and it is not easy to change, but if you can catch something you want to change early enough, you can bring it forward wth the Project manager, so always have a look at the plan for your house each day and make sure you are completely happy.
Observe and understand
Another reason why it is good to visit the site is so that there is an understanding that you are comfortable being there and observing, this could allow more comfort between the project manager and client, which will lead to more communication about what is preffered and even new ideas from the project manager could come about.
It is your house and your decision on how it looks, putting in the few extra minutes day to go look at the site or brushing over plans can help your house develop beautiful.