A very easy to sew, easy to put on, and versatile carrier. For carrying baby on back facing in or out, or on front facing in or out, or on hip facing in or out.
There are many ways to assemble this. The right way is the way that you like best, whether it's the easiest, most attractive, or fastest. This is just a basic variation.
There are many other methods to make straps. However you choose to make the straps is fine.
1. For turned tubes (easy to sew but difficult to turn as it is suitable only for heavier-weight fabrics), cut strips of desired length twice as wide as needed. Put raw edges together and stitch around 3 sides leaving one short end unsewn. For lighter-weight fabrics, cut straps four times as wide, fold in half and baste, then fold in half again and stitch. Turn tube and press.
Optional: to pad straps, lay straps across shoulders and mark just past the shoulder, near the collar bone in front and the same distance in the back. The padding should just cover the shoulder and not pass under the arms, as this causes discomfort when wearing as a “ruck sack” in back carry.
Add padding: once marked, sew across the strap at the lower mark, stuff, then stitch across the strap at upper mark.
2. Another option is to sew folded (unturned) straps, which is suitable for heavier-weight fabrics, and should be done with lighter-weight fabrics. Cut strips four times as wide. Press raw edges toward center, then press in half and stitch close to one long edge. This gives four layers. You can insert fiberfill as above, or wrap batting or foam into the strip and topstitch down the center of the strap to keep padding in place, similar to a backpack strap.
The most basic way to tie for front carry is to tie bottom straps around waist like an apron (double knots, no bows!). Bring top straps up over shoulders one at a time while holding baby with one hand (this takes practice), cross in back, bring around to front and tie a knot under baby's bottom or across baby's back. For facing out, tie straps under baby’s arms across chest.
For back carry, lay out carrier on a sofa and place baby on. Sit on edge of sofa and double knot bottom straps around waist. Bring top straps over shoulders, snugging baby up, and pass straps under arms “ruck sack” style or cross over chest. Pass straps under baby’s bottom and bring around to double knot in front.
Be creative! Add custom details like a pocket on the body of the carrier or on the strap to replace your diaper bag, a fabric strip on the strap for a toy/accessory bar. Add another outer layer to the body of the carrier, leaving the bottom open, to form a pocket when turning carrier inside out to stow the straps.