Adoptables 1 and 2 - Lineart

Soooo I'm going to do adoptables tho I don't know exactly how this is gonna go down :I

Basically since I can't use cookie-cutter methods being without a tablet right now, each one I make is completely unique (though I'm thinking that I will offer related adoptables, such as: 'I loved Axel! Can I have one like him? Only older?' and then I'll make a SIMILAR but NOT EXACT adoptable and he'll be Axel's older brother :3 Actually I might have to make his older brother now with that in my brain XD Anyhoo!

These were both fun because I literally did the first thing that came to mind for every part of them, including the first name that popped into my brain that I liked. Their hair, eyes, face markings, clothes, little quirks, were all decided spur-of-the-moment which was really nice considering I typically agonize over details of characters I plan to keep and use :3 Considering these little darlings will be given away I just let inspiration go hog wild!

They are both drawn and inked on 4x6in notecards and therefor an added bonus of my adoptables is the ability to have the physical copy sent to you if you wanted!! A little more fun than a purely digital copy, I think.

Now this is where I need feedback my lovlies:

First: I wonder if I should sell them now and have the buyer pick a simple color pallete I follow? Or should I color them however I like and THEN offer them up?
Second: When they are available for grabbies, should I have a set price for them or open it up for an auction of sorts?
Thirdly: If it is a straight 'buy now' price, should I use DA Points, Real Monies, or a choice of the two?
Fourth: If it is an Auction, should it be points/cash and should I have it go on in the DA comments or in some other venue?
Fifth: Should I color them in colored pencil, markers, or water color?

Thanks for your time in looking at this, and helping my considerations of how this will all go down :3