Hat's off!

No, the beret is on.

 The beret was blocked and came out just fine.

How to block a beret? Find a large dinner plate (the same size as the kraft paper pattern used for weaving). Thanks to Elizabeth Zimmerman for this tip in her book Knitting Without Tears.

 Dampen the top of the beret in lukewarm water, squeeze most of the water out, roll in a terry towel to absorb more moisture, and then stretch it over the plate.

 Don't stretch the knitted ribbing.

Let it dry away from heat or sunlight for 24 hours.

This project will be in the next book following Knitter's Weaving Book. The next book will be called Knitters' Weaving Projects.