The above christian portrait of saint james for the purpose of conveying the powerful presence of the apostle and remind people of their beginnings of christianity.

Depends on the painting!  Though a famous painting of Saint james is by Guido Reni.

This sounds like a personal reflection on something you did. it is asking the hardest part, or a part you may have struggled with on an informal interview you must have done. it is also asking advice you'd give someone else for the process of completing an informal interview, so you should write something that would . for example, maybe the first thing they should do, something they should include.