These two could be starting points. The size of the heads would be made the same so the scale was equal. Joseph would be extended downwards to include his arms.

Cyprian could be modified to make him appear more African, in terms of hair colour, texture and features. Features and robes would be unified in colour and tone so that it worked as one icon.

Text could all be Cyrillic.

Other images found:   St Cyprian

St Joseph