Please remember that the chicken embryo inside the egg has to have access to Oxygen, that is why the eggshell is porous with tiny holes. Your incubator will have to address this problem. I am afraid you aren't aware of it because you state that you will wrap the egg next time in plastic wrap, which would effectively smother the chick embryo. Those here with homemade incubator skills can guide you through if you want to build one, there are many ways. Just remember to hatch at least 4 or 5 because they all may not make it or be fertile eggs, and there might be losses after the hatch, too. Accidents happen, chicks get entrapped in feeders, drown in water containers, get crushed by feeders that get overturned or just get sick. They get pasty butt if they get too cold and sometimes are born with birth defects like crossed beak and others. Learn to use the search on this forum so you can learn about hatching eggs and associated problems and solutions as well as how to brood and care for the chicks. You need to have at least 2 or 3 that survive because raising single chicks is much more difficult.