"I invoke thee, Solar Spirit, with the good auspices of a live God in order to let me see (name of the person)".
say thses words, you will say:
"anima mea, turba et valde sed tu domine, usqueguo"
Go over it 3 times, looking at the Sun. Then close your eyes, focusing in your thought and in your mind imagination the image of the person you want to see, who will appear.