Ohh, I invite you to follow these steps: =)

1. Upload your images (up to 10) through the "upload images" botton.
2. Select the size ratio 4:3, 3:4, 16:9 or 9:16 (The chosen ratio will be applied to all the images)
3. Choose the order of the images and select the area for each one.
4. Click on Next.
5. Check your images on the carousel. Swipe left/right.

Any question, don't hesitate to contact me!