On iOS devices, you'll be redirected to install the Canva Application, once installed you can tap on Log in and enter your credentials. Your students' credentials can be found here: https://levelupvillagehelpdesk.zendesk.com/hc/en-us/articles/115000997771-Locating-Outside-software-logins
Start by creating your poster. Scroll to the right of the icons (below the Canva logo) and select "Poster"
Tap to edit your poster
You'll then be able to re-edit your designs by tapping on "Your designs"
When finished with your Poster, your partner will be able to view it by sharing your login credentials.