This is rather like asking how you paint a picture of an 'impressive horse' - there are so
many variables of interpretation and execution that it's hard to know where to start!
In addition to examples of what you're aiming for it would help if we know what
you've tried so far and what gear/facilities you have available to you.
So
narrow it down for us and let's see if we can help.
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An Eagle for an Emperor, A Kestrel for a Knave.