Hi Nigel;
It looks Good !!! In 1/35 scale armor; there is A Ton of small extra details that could add to make it all that much better ! but you have to ask yourself just how much detail that you are willing to add. You could spend many Hours trying to add the missing details, if you are willing to go that distance then that's fine.
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The one point that Greg pointed out is just one of many small details that could be added;! And the fine detail painting is another matter.
Hear are just some details that will make for A great subject ! Running lights, Optics such as periscopes, adding the Glass etc; detail & weathering Panel lines, Coax M.G. !!!! Reference material at times, is A must; But if not Available, the Box art will help !
CHEERS; MIKE.