Here are some popular decorative techniques that help make your desserts look more complicated and elegant. There are lots of decorative techniques out there and I plan to add more as I think of them or learn new ones!
Dessert Sauce Designs
How to make large chocolate curls
Making Your Own Stencil and Painting with Icing
Making a buttercream rose and a rose spray
Making your own fruit powder
Using stencils to decorate cakes