Finding enough free images that match the theme and vibe of my game is currently the greatest obstacle. I don't have the time or ability to draw the ideas I have, but the free image stock files are quite limited in scope.
To make creatures a bit easier I am going to try and stick with Black and White drawing type images only.
For events I will have to try to get as close as I can with an image, then make it very clear in whatever game promotion I do that the art requires funding to get better.
This being my first game attempt, I hope to learn from this experience as it progresses.