Things to keep in your achterhoofd:
Make use of your space. Important things can be really big.
Keep it functional.
If you use black, make it: C 50%, M 50%, Y 50%, K 100%.
The pink is 100% Magenta.
Preferrably don't use more than 2 different font sizes.
Better to use a "—" than a "–" or a "-". Just for aesthetics.