Hi Missy i have quadrupled CA's base and made curries CTM,Madras,Jalfrezi,Korma and Ceylon all in one go, its getting used to the thickness that YOU think should be right, buy a CTM or Korma from your local TA and try to get the thickness the same (thats what i do, every curry i make which i havent tasted before or for a long time i always buy it first from a few local TA's ).
Gazman stated by cooking the curry a little more stirring and scraping back (getting the little crusty bits off the edge of your pan) then reducing down to the thickness you desire, it enhances the taste because you are cooking out the liquid in the curry and leaving all the goodness of your base and spices etc behind.
Check the Post Your Pictures section and check to see other peoples curries it helps alot.
Hope this helps.