I do AQA but here are some quick tips:
Use your own photos for some pieces (doesn’t have to be all, around 60% is ok).
Record some initial ideas like basic sketches.
For layout, a simple watercolour background will do just fine (literally just dribble water over it).
You could also try cutting out some card, stick photos onto it and then tie it to your book.
Photos on black card is also a nice way of making your book look prettier.