Problem: I would like to display an image for each option in a select custom field, and allow Users to click images to select options in a form input field.

Solution: There is no easy way to do this with a select field. You can use a radio field instead, and add image tags to each option in the field settings page. You must include a custom code snippet to allow HTML content here.

add_filter( 'types_sanitize_field_labels', '__return_false' );

Relevant Documentation:
https://toolset.com/errata/html-in-toolset-custom-field-labels-is-stripped-when-saving-the-fields/

Problem: I would like to display the name of a custom field and the field value, conditionally, based on whether or not the field has content.

Solution: Use a conditional block to display a field conditionally based on its content. Include the field name in a paragraph or other basic text block.

Relevant Documentation:
https://toolset.com/course-lesson/using-toolset-conditional-block/

Problem:
The user would like to customize the styles of the images inside a slider block.

Solution:
You can customize it using custom CSS code inside of the content template or the view. Check this reply https://toolset.com/forums/topic/add-padding-and-border-around-images-presented-on-image-slider-block/#post-2039933