Hi Diane,
 
I find the best way to unite is to gradually move the hives to be united
until they are side by side, then once combined move the combined lot so
that they straddle the join between the two hives, then no-one get's
lost! Some of your lost bees will probably find their way to another
hive others will get chilled and die.
 
I would leave the hive  until the bits of newspaper are in a little heap
(a day or two) outside the hive, then remove the remaining newspaper
from inside the hive or it will get propolysed and will be a pain to
remove.
 
Another point (for the future)
Sometimes very entrenched laying workers will not tolerate a real Queen
and you may find the queen you have united is killed! This can be
avoided (too late for this lot of course) by taking the laying worker
hive some distance and shaking all the bees out on the ground (get well
protected), then moving the hive to the same site it came from. The
laying workers bein non fliers will not come back to the hive, so you
can then immediately unite the rest of the bees with a Queenright hive.
 
 
hope this helps
 
All the best
 
Steve
Kilspindie
Scotland