They outdid themselves

[DeterminadoAprender]

Would that phrase translate to ... "Se desvelaban"?

[chileno]

Would that phrase translate to ... "Se desvelaban"?

Se sobrepasaron, superaron, mejoraron.

[Tomisimo]

"Se desvelaban" would be "they stayed up late".

"They outdid themselves" =
hicieron su mejor trabajo
hicieron mejor que jamás hayan hecho

(Chileno's suggestions are good too)

[CrOtALiTo]

Then I can say figure me this phrase.

I outdid myself- me desvele.

I don't know if am in the correct.

[AngelicaDeAlquezar]

In colloquial (but socially accepted) Mexican Spanish, I would have said "se lucieron" (the idea is they did a brilliant work). :D

[chileno]

In colloquial (but socially accepted) Mexican Spanish, I would have said "se lucieron" (the idea is they did a brilliant work). :D

So very right, Angelica. :)