For goodness sake get some proper instruction and practice under your belts before even contemplating the "big match" temprement that accompanies any sort of "display".
Instruction should ideally come from someone who has at least learnt in the military if not instructed in the military. Take up the offers made earlier in this thread.
Formation is easier the closer you are to the leader (less relative movement) during manoeuvres. It is not something that just happens, its a bit like hearding cats.
As far as I am concerned the definition of a display as it applies to your formation arrival, you need to ask the question why are you doing this rather than a simple straight in approach?? Sure as eggs are eggs, that's what the fun police will be asking.
If you want to do it, do it properly.
PPPPP
Prior Planning (or permission or practice) Prevents Pi$$ Poor Performance
Regards
T