If you have self-rising flour, you basically just won the lottery but forgot you bought a ticket. This flour already has baking powder and salt mixed in. Use it cup-for-cup to replace all-purpose flour, but omit the baking soda and salt from your recipe. The texture will be a little lighter, but it works. And you’ll look like a genius.
Pro tip: Self-rising flour is just regular flour with baking powder and salt forced into an arranged marriage. It’s not magic—it’s just lazy efficiency, which I fully respect.