Include all your planned expenditure and make sure they are costed realistically.
Include all eligible overheads in your budget.
Make sure you are clear that your project presents value for money.
Allow for inflation if the project will be running over several years.
Check the eligibility for match funding and ‘in kind support’.
Check all your figures add up and ask someone to double-check them.
Don’t be greedy or underestimate what you will need. The funder will have a good idea of what projects usually cost and whether your application is realistic.