If there was a place we could post the link to our gallery here ? That could work.

Mine looks like this. No idea why that extra text showed up, I'm logged in.

IrfanView can do it to.

Most vtt I have looked at have a faq or suggestion page of the battle map sizes and pic format they work best with.

1) You can use different colors, or bitmap fills, to show increases in elevation.

2) Just have two maps, one for you and one for the players.

I would give depth to #2, but I'm yawning and would likely mess it up. Someone else will have to give a couple of ways to do that.

Annual 136 has a template for star charts.

Before it came out, I just made up a color chart for star types, and made rectangles of constellations.

I agree with Monsen in that large maps should be left until later. I did sub-sector maps, sector maps, then partial galaxy arm maps. Here is my Traveller site for ideas.