When a recipe calls for self-raising flour and you do not have any you can make some using two simple ingredients. This recipe is the ratio I use so if you have more flour just add more baking powder according to the ratio I use.
Ingredients to make self-raising flour
100 grams plain flour
1 teaspoon baking powder
Method of making self-raising flour
Put the plain flour in a bowl
Add the one teaspoon of baking powder
Mix, and that is it.
You can sift the flour too if you like but not always necessary.
Some baking recipes to try which use self-raising flour