When should I cover my new tattoo? And why is it already scabbing after 5 hours?

I just got a tattoo today.. two birds, one on each shoulder blade. I got them done literally about 5 hours ago and they're already scabbing! I had the saran wrap from the shop on, and then I took it off when I got home and washed it and put the ointment stuff the shop gave me on. It's been about 3 hours since I washed and moisturized it, and it already as scabs. I'm wondering if I should wash it again and apply the stuff, to help get rid of the scab naturally, even though it's only been three hours. My other question is this- should I put saran wrap on it under my shirt for bed? Will that help it not to stick to my clothes? And will it protect it in the night? Then I was also wondering tomorrow, when I go back to work, should I put saran wrap on it when it's under my jersey like fabric shirt and it's not exposed, but it might stick to my shirt? Oh, and another thing, the shop gave me two little packets of the ointment, and that's all. I read somewhere else that now that it's open I shouldn't use it again.. but they are all I have! Is that safe? Sorry for all those questions.. thanks though. Oh, and I would appreciate if it was from tattoo artists/very tatted people. Not just someone who thinks they should inform me of a little common sense with no actual prior knowledge. Oh! And my anti-bacterial soap is scented.. I don't have any that isn't.