Static Banner ads needed - 4 different sizes

Design details: We are looking for 4 sized banner ads

300 x 250

160 x 600

728 x 90

468 x 60


Professional, clean and modern
Not overly complicated or “busy”
2-3 colours
If using photos, they should not look like the standard cheesy stock photos

From past experience revisions will be necessary

Please check out the brief attached.
Banner sizes: 300 x 250 160 x 600 728 x 90 468 x 60
Ideas for the visual style: modern, simple, smart use of colour, material/flat design

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Before beginning work please read the brief. It would be good to discuss design ideas before starting work.