setting up small self employment expenses vs income

In the past FY, I have a side income of £350 but expenses of setup are £1800 (its for YouTube) Do I enter my expenses and income on a self employment form to get tax relief on my expenses or do I just ignore it as the income is less than £1000? TIA

Hi,
If you want to benefit from the higher expenses in order to carry forward a loss, you will complete a self employment page.
Thank you.