You see craftable spells and ruins work hand and hand with each other as the craftable spells are the runes. Here's an example, see below:
that is one example of how the spells will look, for these types of spells you need items aka ingredients to make them work along with saying the words too. There are too many craftable spell runes for me to go over, so i will just tell you a little about the rune patterns. Here's an example of a basic rune pattern, see below:
(sorry that my drawing skills aren't the best) that is a basic rune pattern. Runes can be made with salt, blood or just plain chalk or on a paper. But note that certain runes do certain things, the one i drew up above is a basic one so any basic spell can be crafted with it. (hopefully, you can draw it better then i can) You see there are 3 levels of runes, see below:
those are the 3 levels of runes. Alright, there isn't much more to say about runes and craftable spells other then there are too many of them for me to go over in this book. Read on young spiritualist!