Your welcome, one method you may wanna explore while you develop is penny divination. A few people have had good results with it with regard to evocation.
also i would add when you begin evoking during the ritual take good notes of thoughts that bubble up during. I could be the entity attempting to make contact. Dont worry about if they are of your mind or not, least not during the ritual. Question things all you want after the ritual but leave doubt out of your ritual.