Hi Baddev88
Not got any neck tats myself but from my understanding it is not much different to any other part of the body.
The main issues to watch for are;
Any ingrowing hairs – this can irritate the skin and cause discomfort.
No shaving until it is healed – obviously could damage the tattoo.
Do not tattoo over any moles or acne/general scarring before speaking to a professional.
Apart from that enjoy your tattoo and post up when you are done.
Take Care
Matthew