How to create a glow effect in Canva. Posted on 14th August 2018 1- Open Canva and select your design size. 2- Your design space will appear in a new window. Click on the shapes icon. 3- Pick the shape you would like to create a glow effect on. 4- With the shape selected click on the colour picker and change the colour of your shape. 5- Copy your shape. 6- Click on the copied icon and then the transparency, adjust to 80% 7- Resize the shape so it is a little bigger than the previous circle. Copy the 80% transparency shape. 8- The new shape can be adjusted to 60% transparency. 9- Resize to slightly larger than the previous shape. Repeat another time this time with 40% transparency and larger again than the previous shape. 10- Select all of the shapes and group. Your glow effect will show up clearer over dark backgrounds.