Use a needle at least two sizes bigger than the one you used to get gauge to keep the bind off loose. If you’re still having trouble keeping the bind off loose, I like to work the stitches first, then slip them back to the left hand needle and pass the stitches over afterwards.
1. With front colour, brk the first stitch.
2. Lay front colour yarn over the left hand needle and pick up back colour.
3. Brp the next stitch and yarn over.
4. Pass the second stitch on the right hand needle over the first.
5. With front colour, brk the next stitch.
6. Pass the second stitch on the right hand needle over the first.