Church Door

This is my picture that I took in canton, it is the Unitarian church on main street. I decided to model the top of the door with a semi-ellipse. The equation is f(x)=sqrt((1-x^2/1.1)+4.525). I could increase the y and the x by changing the numbers in the equation. The doors of this church are also symmetrical with a reflection over the y-axis.

Done