One form. It reaches Federico directly, and he answers by email himself.
Requests go straight to Federico, not to an agency inbox. He answers from his own address.
For a convention stop, as soon as the dates are announced. For a large piece, months. The days fill in the order the requests are answered, not the order they arrive.
The subject, where on the body, roughly how big, and which dates or which stop. If it is a portrait, have the reference photograph ready.
Occasionally, but this is a black and grey portfolio and that is what he is booked for. If you want color realism, say so and he will tell you honestly whether he is the right person.
No. He will work from your reference photographs and your idea, and draw it himself.
Often, yes, and black and grey realism is one of the better ways to do it. Send a clear photo of what is there now, in daylight, and he will tell you what is actually possible instead of promising.
It goes straight to Federico by email. He answers from his own address. If your idea is not something he can do well, he will say so rather than take the booking.
Looking for the masterclass for tattoo artists instead? That is a different thing entirely: Portrait Realism Academy.