Need Help Scaling Objects Up or Down in Daz Studio

Titel isprobably not proper english but i cant find the right wording.
Anyways...
I saw this image:
https://www.daz3d.com/media/catalog/product/cache/1/thumbnail/689303033aebc8cae535000c73c8db4b/m/r/mrl-dforce-curly-bun-for-genesis-8-females-02-daz3d.jpg
Its a fey/sprite lying on a hand.
I got insprired by it and wat to make something similar.
What would be the wayto go?
Enlarging the hand and keeping the model at 'full' size.
Or
Keeping the hand at full size and make the model smaller.
I feel both would work but what arethe advantages/disadantages as to one over the other.
One thing i can think of is thatby enlarging the hand it might mess up the texture, but not sure to what degree.
Any advise / tips arewelcome.
EDIT: Changed title
Comments
You want to make the fairy/pixie smaller.
If you make the hands larger, you'll mess up the sub-surface scattering by effectively telling it to simulate how light reacts going through tens of centimetres of flesh, not a couple of centimetres, so the hands will look unnaturally untranslucent. As far as the fairy, it's perhaps not what we're used to with green-screen shrinking down full-size actors, but realistically their small bodies would allow lot more light to scatter through them than with a much larger human body, so in strong light even things like their thorax might well have a notable SSS translucency.
This pose set might help. The sleeping fairy pose isn't the same as in that promo shot, but is quite close, and could have been the starting point for that pose, then modified to fit the hand she's laying on and not obscure the hair in any way.
You might want to take a look at this set also:
https://www.daz3d.com/giant-and-princess-poses-for-genesis-8-males-and-females
Enlarging/Reducing -- typical photography terms
These are some great points I wouldn't have thought of. Thanks for pointing them out. For those of us who like to use Active Pose, however, it gets a lot harder to use pinning when things get small because the pin icons stay huge and get in the way. I'm not sure how to work around that.
Also known as embiggening and debigulating.
There are a couple of ways to do that.
(My preference is creating presets.)
Mescalino, you could change your thread title to "Need Help Scaling Objects Up or Down in Daz Studio" or "How do you enlarge or reduce objects in Daz Studio"?
It can be hard for non-English speakers to find the right words, No worries.
Thanks for this advice
I used Method 1 and the initial test render looked nice. (just need to redo the lighting) (as for the pose i used a somewhat standard sit pose en adjusted it a bit accordingly.)
Done, Although i know how to rescale i just wasnt sure on the prefered/best method for my specific case
.
Keep in mind that just as Matt mentioned for making the holding character larger, if you make the fairy smaller, you may also need to adjust surface settings. Settings like translucency, subsurface scattering, etc. have depth settings what may have made sense at 100% size, but when the character is 5% of her original size, tehcnially you're telling Iray that light is passing completely through her. This will drive you crazy trying to figure out why the skin suddenly looks so odd!
On the other hand light passing through a fairy character might be an interesting look.