1. Get a dead baby/fetus/person/animal or ect... You can make one yourself by killing a baby/person/animal or performing abortion (click on to go "how to do abortion").
2. Get a jar. Proper sized one,so the dead baby should fit in.
3. Fill a jar with Formaldehyde (CH2O).
4. Put a baby in.
Useful Note: You can change in places step 3 and 4.