Thank you all for the kind welcome. Currently reacquainting myself with MS Paint and also trying to get my head around GIMP, which appears to be a more fully fledged picture editor but with a correspondingly sharper learning curve.
Like a few others on this forum I have created a nation on www.nationstate.com
and as such am building a navy to suit. Not sure if I should go the historical route and show the evolution of the 'Emanian' fleet or simply create vessels as they would appear now. Probably need to toss a coin on that one.