Both fpdc and bpdc can add more texture to your crochet project. These stitches are worked like the regular double crochet except for the fact that you insert the hook in a different way before you pull up a loop.
Fpdc is easier to work than a regular double crochet. In fpdc, you insert the hook from the front. In bpdc, you insert the hook from the back. When doing a bpdc, just fold and hold your work to keep it out of your way when you complete the stitch. Below is a step by step pictorial illustration of the two.
Regular Double Crochet
1. Inserting the hook to work a regular double crochet
Working a Front Post Double Crochet (fpdc)
1. Insert your hook from front to back through space between the double crochet stitches
2. Bring hook back to front thru next space between double crochet stitches
4. Completed fpdc
Working a Back Post Double Crochet (bpdc)
1. Insert hook from back to front thru the space between the dc stitches
2. Insert hook to the back thru the next space between the dc stitches
Ear warmer worked using Front post double crochet Stitches
The ridges on this headband are formed by front post double crochet stitches