The front porch is in bad condition

My front porch is a normal porch attached to a house built around 1921. It's an open porch that has had some work done on it in the last ten years to replace some of the decking and some of the framing and supports, but all in all it is rotting and is probably covered in lead pain. So my wife and I have decided to replace it.

We would like to make the porch a bit bigger in the process of replacing it and enclose it so that we add a bit more space to our house in the process. I think we are going to make it a three season (we live in Massachusetts) so we will not need to insulate it or add a full foundation.

Now that we have decided that we would like to do it I need to come up with a design.