At the beginning I already saw a rough image of the application in my mind, so I went straight to the wireframing with the sketch that I had imagined.

The main usecase of the application was with a mobile, so I decided to start with mobilefirst-thinking and
create wireframes for the mobile only. The desktop version is easy to create based on the mobile UI’s.

I wanted the application be as clean as possible and to use only neutral colors with a one highlight color for the pins and other icons. I found the right color before I started to create the wireframes, so I chose to use it already in this stage. I also designed components that I would use in the finished design, so they would be ready to use. 

I created sign in / sign up pages that utilizes Oauth2 authorization protocol, a home page with scrollable item list and pages for creating and deleting items.