What is the best way to build a miniature of the sydney opera house ?

Question

using only stuff like straws, styrofoam, cardboard, glue, etc...
y'know, useful junk.

Answer 1

Use a photograph...Paul Robeson and Joern Utzon did not see this coming..really,zap on the overheads on computer or battle the tourists..that's useful junk..Who's Paul Robeson anyway? Or Utzon?

Answer 2

Thin cardboard cut to shape will form the shells nicely while small wood or Styrofoam blocks can form the bases and hold the cardboard in the curve.