I really like the shield and especially the worn out look at the lower part. But due to a shield in that state perhaps a few deeper cuts and dents could be painted in especially on the upper part of the shield.
Also I like the shading of the hand.
Nice touch with the heraldry design which to me resembles of the look of norse carvings and reminds us of the Normans forfathers.
Im not sure if its the angle or the picture but the whites of the eyes could be trimmed down a bit perhaps.
Please keep us updated on the project.