Those are really cool designs for the season. The fact that you switched to Canva after realizing the other two tools weren’t helping says a lot about how intentional you were about the designs. I was going to copy you but it’s sad you didn’t add any process :(
The process is simple. I used a template, changed the color and the design and added mine using elements. For the first. The second I used a custom size of 1800- 2100px then began my design at added matching color with leaves. You can find some helpful stuff under the elements.