I don't believe they tell you. External candidates aren't entitled to feedback if failed, whilst internals can ask where they slipped up. My personal experience was that there was sufficient time for all tasks and I know it's easy to say this now but really do try and relax, it's not as bad as you think it's going to be and the only pressure will be that which you put on yourself.
As for the finding shapes/SCAAT test I'd say don't overdo it in practice as repeating the same paper defeats the purpose, if anything try and download different ones through a quick Google search. Also when doing the real one, don't even dream of completing each sheet to the end, they're looking for a balance of accuracy and speed rather than for someone who can complete the whole page, besides I think you'd have to be a robot to reach the end of each sheet anyway!

Good luck mate.