App promo-video based on a video template

Hi video editors! We're launching an iPad app next year and i'm looking for a video editor who can make a nice, professional promo video that explains the most important functions of the app in 30-60 sec. The video is gonna be the eye-catcher on the website and the social media platforms and it wil also play on a big event next year. We're a start-up so we have a low budget. For this reason i've bought this video template: [login to view URL] and i've also bought a soundtrack: [login to view URL] What we try to achieve is something similar like the video template, but with our own script of course. The app has also an action that needs some customization in the video. This action is making a photo that will be added to the app. As you can see, the video template doesn't have elements for this action. I'm a graphic/webdesigner myself so i can deliver the app screens, logo and everything in vector. Notes: - The video template is an Adobe After Effects file. - Portfolio required