You must make four images with minimum width 1024px based on samples.
Pictures must be maiden by yourself, not from stock, not from free source.
If image you propose will be found on Internet, they are not accepted.
Pictures must be as close to samples as possible, but not similar at base parts.
Only conceptual idea must be transmitted from samples.
Target site for those images is consulting company site which mostly consult local companies in relationship with World Trade Organization.