how can i make a horizontal image changing slider.

Hello,

If you want your slider comes from bottom and then cover the background by going upwards.
You can try the “Slide Over To Top” slide animation from your dashboard Slider Revolution >> Select your specific slider >> Select the “Slide Options” >> Animations.

Video for clarification: https://jmp.sh/9sjJ1pe

The image will automatically shown horizontally when your slider mover vertically and you have multiple slides and images on different positions.

Best Regards.