
Background:

Use a bold and dynamic background with vibrant and contrasting colors to capture the viewer's attention. Colors like orange, yellow, and red can convey the idea of opportunity and high profitability.
Add stylized graphic elements such as bar charts or ascending lines, representing exponential growth and the attractiveness of pools with high APRs.

Pool Icons:

Visually represent pools with recognizable icons such as pools or ascending bar charts. These icons should be in bright colors and easily identifiable.
APR Percentage:

Add dynamic details such as sparks or rays of light to give a sense of movement and dynamism to the thumbnail.
Ensure that all elements are arranged in a balanced manner and that the thumbnail is visually appealing and informative.