figuring out how much to charge is fairly simple. how long does it take you to do, say, a full colour bust? for every hour it takes you, charge minimum wage + however much extra you think your work is worth. personally, id go for £10 an hour, but thats bc im a londoner and thats london living wage.
likelihood is, thisll come to a price you consider pretty high. and for a lot of people wanting to commission you, itll seem pretty high too - but its the only reasonable fee. you need to value your work yourself for others to value it. id only go down in price for mates rates, bulk commissions, or extenuating circumstances.
if you was to do commissions as your main source of income, youd prolly charge higher based on how many commissioned you got. my dad used to be a freelance gardener, and he had to charge £20 an hour to make ends meet, he got like one or two jobs a week.
