All my transactions are reconciled, what else should I check before submitting my VAT?

I've finished my first VAT. All my transactions are reconciled. but I'm a bit worried 'cause I don't know if I've missed anything.
What else should I check??



I do a few check ups before submitting my VAT.
I check that all the right VAT codes have been applied.
Then I check my balance sheet in my VAT account to make sure it corresponds.
And I mark the ‘Late claims’ check box – to make sure that any VAT that was supposed to have been reported during my previous VAT return will be included in this one.