What Design pattern to use in a project

There's a project I would like to build in the ASP.NET environment where I'd like to use design patterns.

I've built numerous android projects and a few C# projects But I don't really feel confident in ASP.NET, Problem is I'm not quite sure what design pattern to use or how to even build such project.

The project: taking a picture (using your android) and saving it instantly on your desktop at your PC at home.

My questions are:

• Firstly, how to implement such a project
• What design patterns should I be using

Thanks in advance for every reply.