I Draped the pattern for the body in muslin.... I started by making a dragon "dress form" out of lumps of newspaper and masking tape.... i just kept adding paper until i had the shape of a body i was looking for...... a little twisted and whimsical... below is the paper base.
After draping muslin over this form i sandwiched high density upholstery foam between 2 layers of cotton Bobinette,, this gave me fabric seam allowance to stitch rather than trying to glue or stitch the foam bits together. It's a technique often used in making fat suits for theatre. The body of the dragon is once "piece" it's shape comes totally from a series of funky shaped darts, it is similar to how I created the ram horns for Stanton Welches "Dolls House" see them in the ballet section of my web page http://www.travishalsey.com/ .
The finishing work involved glitter glue, some nail polish(for wetness) , sequins, a chicken feather flame erupting from the dragons mouth, and of course a full round of airbrushing. I hope this inspires you for your next puppet project.