I need some photos edited by a photoshop designer!

Hello there! I need four photos created for a surprise for a friends birthday. I have four photos of me and my friends at school and I would like to photoshop our friend James into the images (it is a long standing joke that he pretends he went to school with us).
I don't need the photos to look super professional. I would rather they looked a bit amateurish (like the lady who photoshopped her trip to China ....as though James may have done them himself. See here for reference http://www.bbc.co.uk/newsbeat/article/35900804/kenyan-woman-edits-herself-into-holiday-photos-with-hilarious-consequences

I can email the images over once you are happy to take on the work. Hope that's ok.

I only have PDFs for the images...sorry I have had to upload everything from my iPad! Essentially I would like the photos combined in the following ways...
1) James' face in Untitled 2 cut out and placed over the face of the girl in the background of filename-1
2) James' face in Untitled 4 cut out and placed over the face of the girl who is crouching down in the front of filename-11
3) James' face in Untitled 1 cut out and placed over the face of the girl on the far left in untitled
4) James' torso and head in untitled 3 cut out (maybe flipped horizontallly) and inserted into filename-12. He can be anywhere on the right hand side of the teacher.