A lot of people don't like sims with all zero sliders as they all look the same and are generally referred to as pudding faces. I don't worry too much about where the sliders end up so long as I like the look of my sim. To maximise the variety in the appearance of my sims I find having a variety of non default CC skins is very helpful as different skins can completely change the look of a sim.
I use postimg to share my images. They have a free and a paid choice.
Have you saved your sims to the library? That might be a good idea as you'll be able to 'share' them, then pick up their .Sims3Pack file and install them in any new Sims 3 folders you might like to create in the future. I have hundreds of Sims I've made over the years saved like this and it means I can keep them for future use and when reused I get a chance to change them a bit if I want and still keep the original if I ever want to go back them.
Good luck with this project. You've put a lot of effort into making your sims.
