How to work relief-treble crochets, front and back on a piece

In this DROPS video we show how to crochet relief-treble both in front and back on a piece after charts, so that it forms a rib pattern. This technique is used in the «Snow Textures» headband in DROPS 204-33.

This headband is crocheted in DROPS Air, but in the video we work with a thicker yarn; DROPS Snow.
You must read a pattern with this technique and look at the charts to be able to follow this video properly. You’ll find a pattern by clicking on the picture below.