Use a simple, white background to ensure clarity.
Use clear, legible fonts for all text.
Employ a color scheme limited to three colors: black for text, blue for highlights, and grey for the boxes or outlines of each plan.
Include clear labels and prices to ensure the comparison is easy to understand.
Arrange the plans in a horizontal row, with the Standard Plan highlighted to draw attention.
Details to avoid:

Do not use any bright or neon colors.
Avoid using any objects, icons, or illustrations that are not related to the subscription plans.
Do not include any background scenery, gradients, or patterns.
Avoid clutter or any decorative elements that do not serve a functional purpose.