Strange Shadows

BreaK

Hey guys could do with some help. Im getting strange shadows on my high poly mesh. Im aware that I've not cleaned the model up, and that probably why, but can you see any other way of creating the mesh? There seems to be a lot of edges towards the top of the model, and there can be some strange shading around there.

I'm giving HP modelling a go for the first time but Im not sure im constructing the mesh in the right way. Any help would be awesome. Thanks.

Ark

Those aren't shadow artifacts, but smoothing errors. Long thin triangles aswell as Ngons will create this on curved/angled surfaces.

Join the verts from either side to form quads and the errors should go away.