Hi there
Please login to access your account.
Edit Your Gallery
Remove images from your gallery by clicking on the "x" that appears once you hover over the images.
Add images by clicking on the ADD TO GALLERY button and uploading your new images.
Change the order of your images by clicking and dragging on the images to change their position in the gallery.
Don't forget to click the UPDATE button once you are done making your changes to have your changes take effect.
To compress your images for web you can use Tiny PNG - https://tinypng.com. Watch the video at the bottom of this page if you need instructions for compressing images.