When can I expect a first proof back?

Depends on the scope of work requested, but typically up to 72 hours.

Do you provide source files?

Yes, you will receive a zipped file with all source/native files.

What if what I need is not listed or I don't see it under Gallery/Portfolio?

Many pieces are confidential since they are still pending trademark/copy-write processes.  However, I can send any samples you need.  Just let me know what you're looking for!