Please can you advise some improvement on my first GraphicRiver Item

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#1

Hello everyone, finally, my first calendar design is accepted but there is no any buying action for a long time. I know that, selling calendar in these periods is not so easy but there may be other issues about my design, sufficiency of project or even lack of marketing. Actually my work is not a normal (standard) calendar/agenda, it is more likely project based agenda, so maybe the demand of this type of project is not so much.
So I decided to ask you about your experiences to increase the promoting activities and maybe the design critics.
Item page : https://graphicriver.net/item/probook-agenda-for-2017/19315817
Thanks.