I mostly operate on US Pacific Time, but am quite flexible and can be available whenever you need me. My availability varies quite a lot depending on the current client load, but I will always give you a realistic timetable for your project and I believe strongly in meeting time commitments.
For any project larger than $300, I require a 50% deposit released up front, and then the remainder upon approved completion. For an ongoing project, repeat clients, or much larger projects, I can talk with you about payment schedules that will work for both of us.
I am available promptly via email, text, phone, Skype, or just about any other medium you can think of. My response time is always less than 24 hours, and can be much shorter if necessary for the particular project.