This is from dockatot, I think it's a pretty good list even for other cosleepers.

Message about Co-Sleeping

The American Academy of Pediatrics has determined that the safest place for a baby to sleep during the first year of life is in a crib, bassinet or play yard in the parents' bedroom.

DockATot recognizes that many people believe strongly that infants and young children should never sleep with adults in their bed, while others believe that such co-sleeping provides benefits. Many who choose to co-sleep with a DockATot dock find that the sides help establish a separate space for the baby that is close by to the parent(s).

If you choose to use a dock while co-sleeping, in addition to consulting with your pediatrician, be sure to follow these seven precautions:

1. Never allow baby to co-sleep with an adult who suffers sleep disorders, is under the influence of alcohol, drugs, or medication, or is obese. Ensure that each adult in the bed are aware of the baby’s presence.

2. Carefully prepare the bed:

Place the dock on a firm mattress only. Be sure it lays flat and remains flat with adult(s) in the bed.

Position dock in center of bed, near headboard. Each side of the dock should be at least 12 inches from edge of bed.

Make sure there are no extra pillows on the bed that can go over the baby while in the dock. Pillows and covers present a suffocation risk to your baby. Each parent should use only the pillow under their heads.

Make sure there are no covers (including blankets, sheets, pillowcases, shams, comforters, and other bedding) over the dock. Covers placed over the dock can end up over the baby’s face. Covers can also cause overheating which is associated with increased risk of Sudden Infant Death Syndrome. Parents should use separate covers to reduce risk of blankets being pulled up over the baby.

3. To reduce risk of Sudden Infant Death Syndrome, only place baby on back in the dock.

4. Do not add any blankets or padding of any kind under baby in the dock.

5. Keep all cords and strings away from baby. Cords of any kind, such as window or blind cords, present a strangulation risk.

6. Never leave baby alone in adult bed. If baby awakens and you aren’t present, s/he may scoot and fall off bed.

7. Never use components of dock separately. Only use when fully assembled and zipped. Loose fabric and parts may present a suffocation hazard.

Safe bedsharing

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