01.
Start with the front side of pentagon facing up.
Prepare to convert all the creases into either valley-folded or mountain-folded ones as shown on the left crease pattern (CP).
02.
Complete the conversion of the CP given on the step #1.
Prepare to press the model to make it flat by following the arrows shown on the left picture.
Base words are uttered only by the base And can for such at once be understood, But noble platitudes:--ah, there's a case Where the most careful scrutiny is needed To tell a voice that's genuinely good From one that's base but merely has succeeded.