RANDIS< I really do appreciate your work and I have to say thank you for your advices.
I often change my composition during the process.
In photoshop everything is possible, so I never hesitate.
Your idea to add some guys is interesting. But I really prefer to keep this newborn only on these zombies.
I do not want to create a confusion between them and other humans.
It took me a lot of time but I think I finally found the good brush touch to make them.
I have also decided to make some morph on them.