Hi Brett,
I think if you were just starting out you would have problems even with the British flags for the WSS as theres very little information still about from that period.
Lucky for you I've done most of the British Infantry Regiments and their Colonel's flags and most of the information were taken from Robert Hall's colour plates which I purchased from the Pike & Shot society.These may be slightly different from the flags on the Warflag websight, but thats your choice.
You can see my collection on the "Blenheim OOB" thread.If you start from page 4 and work your way forward to page 7 as these are the latest.
You'll find the Link Tim mentioned in the Contact Us part of the Like a Stone Wall website.
John's flag's are excellent and you can see some of them on the Derby World Championships Boyne Game thread.
Hope this helps...........Ray.