This is such a simple tip, and many of you may already be using it, but when dressing your figures I have found that the most useful tool of all is a steel knitting needle.
(Charity shops have jars full of them!)
Whether it's tucking pants into boots, (or vice versa!), shirts down trousers, and coaxing hands with those spread fingers out the end of sleeves, the pointed end of the knitting needle is invaluable.
The knob end turns inside out sleeves back the right way perfectly.
It allows a much neater finish than trying to do everything with your non-scale human fingers.