Dear anyone,

I am writing to you as a Springfield High School wood working student. Our program is one of the most elite programs in the US and is recognized for our student projects in word working magazines around the world.
I personally this year am attempting to remake an old vintage British styled phone booth with an original phone and fully functional walk in booth. Do you have an suggestions for me to obtain/make a rounded top piece for my booth? (this piece is very difficult to make out of wood especially under our time constrictions).

Any thing at all would be greatly appreciated, even any plans or specific directions, pictures, measurements that would help me immensly.