Congrats! You've found the most efficient and under budget freelancer who would do your work on time, under budget with special offers (mentioned in my profile). You'll have an amazing experience, adorable output and 50% refund as per offer.
I would like to mention that I have created such collages in the past for my seniors which will soon be posted to my portfolio.
Keeping the proposal simple, I left your decision to choose the freelancer on you, but, I mention that you'll love my work.