Hi PascalHugo, this is a nice crest however it cannot be used in this competition because you had already previously used the exact same crest in the Redesign tournament in 2015. If you still want to participate, I suggest you to make another crest.
To be honest I haven't known much of the history it represents. However I thought that the wavy design of the coat of arms could be imprinted in the Nigeria template although it isn't as accurate as you say. The sky blue colouring is used as the bright shade of blue (Nigeria's colour is green so they used green-volt). Also this kit depicts the frozen scenery of Iceland.
FanisC7# The coad of arms of Reykjavik are to represent the high seat pillars described in the story of Reykjavik settlement in AD 870. so I find this design a bit out of place for KR part from that they do play mostly in orange as a way kit. https://en.wikipedia.org/wiki/Reykjav%C3%ADk http://www.ngw.nl/heraldrywiki/index.php?title=Reykjav%C3%ADk
The reason for the colours is that Scotland played in the primrose and pink racing colours of Archibald Primrose, 5th Earl of Rosebery. Lord Rosebery's colours were used most frequently in the first decade of the 20th century, but were discontinued in 1909. Primrose and pink hoops were revived as a change kit for the UEFA Euro 2016 qualifying matches.