linking appearance vs reality to quotations in Macbeth
To remember all the quotations you need for your exam when the theme is "appearance vs reality" use the following mnemonic:
First create a key image for "appearance vs reality". One way to remember "appearance vs reality" is the mnemonic: a mirror that changes your appearance.

Now create a single rememberable image for each of the quotations in Macbeth that relate to appearance vs reality. As a first stage we will reference three quotations.
Quotation 1
"False face must hide what false heart doth know". A quotation in which Macbeth must pretend to be loyal while secretly planning treason.
This quotation can be remembered with the single picture of a "mask removal".

Quotation 2
"There's daggers in men's smiles". People may appear friendly on the outside, but they can be hiding dangerous intentions.
This quotation can be remembered with the single picture mnemonic of a person with daggers for teeth.

Quotation 3
"Look like the innocent flower but be the serpent under't". Lady Macbeth encourages Macbeth to deceive Duncan by pretending to be loyal while secretly plotting his murder.
This quotation can be remembered with the single picture mnemonic of a serpent dressed as a flower.

Now link all of the above images together
Link appearance vs reality to false face to serpent as a flower to person with daggers for teeth as follows:
She looked at her appearance in the mirror and you could see the reality but then she removed her false face and she was an ugly monster.

A man with daggers everywhere including daggers for teeth chases after the monster.

The man with daggers while running trips over an innocent flower that is actually a snake.

You now have three quotes from your stock of quotations you learnt that are linked to "appearance vs reality".
If you want more you can extend the story.