Home Buliding and Interior Design

I am in the early stages of the build process I already have land and am looking at different house plans. I was approved for one loan for a house that I didnt get because of its size. So now I am going to build. How difficult is it to get a construction loan these days. I have excellent work history and near excellent credit but no down payment I do own the land that the house will be built on and no money is owed on that land.