Chamfer again the edges that shown below


Inset polygons that show below and move vertexes like it and extrude them



Select 2 polygons that show below, inset them a little and delete them and create new polygon for make a tack

Page 1 | Page 2 | Page 3 | Page 4 | Page 5 | Page 6 | Page 7 | Page 8 | Page 9 | Page 10