Low Fidelity interface mockups Diagrams

The organization I am working with is the HPU Toastmasters and I suppose these are the diagrams of how some certain features will look like on the website i was planning on creating.

I will post features and scenarios and right next to my diagrams then in the end is my video explaining them all.

Feature 1 : RSVP for club events
GitHub's Feature and Scenarios 

Feature 2 : Officer Role Sign up
GitHub's Feature and Scenarios 

Feature 3 : Upload a Video
GitHub's Feature and Scenarios 

Video: