Re: Amateur to Professional
I don't know what the tax situation is over there, but here, if you use part of your house to produce your income, you can deduct the cost of that part as a business expense on your income tax. So not only a percentage of the rent or mortgage, but a percentage of the insurance, utilities (including phone, internet, heat, electric), and repairs. So it is worthwhile to turn that bedroom into your studio/office. A business expense for the use of your home can do a lot to increase your actual income while decreasing your income tax.
Also, keep track of all your art business expenses. I do this by always using a card, never cash, for those things. Then I have it all on my bank statements. Easy when tax time comes and way neater than saving receipts.