I am a freelancer working in the film industry. As such I have have periods of consistent work with a production company for a number of months, but also gain smaller amounts of income from private work on the side. Giving short courses and doing small corporate or private videos and edits. I am not registred as company and do all work as a private individual. How do I divide up my income, to sumbit for my tax return? And what type of tax-payer would I register as?