I would buy some A&D ointment. You can find it by the diaper creams. Wash your tattoo 3 times a day with antibacterial soap. After massage a good amount of the A&D into your tattoo. Some flaking is a natural part of the healing process.
If you just got the tattoo done, don't touch it. Wash your hands every time you absolutely have to touch it, and try applying a skin repairing or moisturizing lotion. If it is a sunburn, try aloe vera.