Hello
Its much easier contributing to stuffs we've got strong connection to and know much about, like places we live at.
Wikivoyage is just here to provide us the platform to share our experience with places with the world. Currently, a lot areas/places in Ghana are not on Wikivoyage. Even the ones already on Wikivoyage will need your help in expanding.
See https://en.wikivoyage.org/wiki/Ghana to learn about some of the Ghana-related articles you can contribute to.