Your customized artwork begins with a few pictures and information provided by you. Any details you might deem noteworthy, etc. Once you've provided the necessary pictures and details, I generally quote a 14 day turnaround. But often it's much faster. (I'm an insomniac who likes to doodle, what can I say). Along the way, I generally send updates/progress pics and encourage feedback.
Once final artwork is approved, I send you a download link for the high resolution versions. (They're big image files and can easily be used for posters, etc). I include various background versions, like full background, transparent version that can be used for shirts or stickers, and simplified white and black backings. All artwork is provided in high rez PNG image files.
