VAT is 25% on a reduced taxable base of 20% of the price (an effective 5%) under the artist-VAT scheme. The base and rate are set automatically — you don't enter them.
No VAT is charged because you are not VAT-registered (under the DKK 50,000 threshold, VAT Act § 71 e). Your name and address identify you on the invoice — no CPR is shown.