Alter some Images

I need two tasks completed: Task 1: I need attached standard Instagram Profile image (for Android phones) edited to include 6 images (I will provide 6 images). Refer to attachment to give you an idea. I will provide the Instagram Profile image to whoever I award the job to plus the 6 images that need to be included in the final Instagram Profile image. Task 2: The image created in Task 1 needs to replace the existing wallpaper on the attached mobile phone image. The final phone image from Task 2 will be used on a billboard so I need high quality files. I have the psd, pdf and other files of the current image with the phone in task 2. Refer to attached images for visual explanation.