Making new map. Need advice on improving quality.

Hey, i trying to create a map for a new board game that I’m making for myself. Its not the most professional made, with no naval borders drawn up, borders not complete and many details missing so its pretty roughdraft. If people could give advice, on how to improve the map borders or how to improve the “picture” so that its not pixellated when i print it, that would be very appreciative.

The game will be similar to the rules of axis and allies but set loosely in about 1720’s. There are no set alliances and only one nation can win the game by capturing 3 capitals.

Ive been drawing it with mostly gimp and paint.net. I really wish i could use photoshop since ive used it before, but its very expensive.

Ive been trying to save it in a larger resolution but it just doesnt give satisfying results in gimp.

Those two countries are Polish Commonwealth and Austria. Austria just won a war with spain and gained naples, and belgium (flanders)

In total, playable countries are:
Spain
France
Great Britain
Ottoman Empire
Austria
Polish Commonwealth
Russia
And possibly Prussia

At the time germany was seperated into many princes under the holy roman empire. Technically the Austrians were emperor over them but it wasnt a very centralised rule.  They were pretty much independent, so i chose the ones that were pretty powerful, and gave them the land. Im trying to make rules that allow you to influence the minors in the game to perform actions for you such as move their armies to attack adjacent provinces. You can also just attack the minors and take the provinces for your own aswell.

That would be great, ill try to finish it soon and send it to you.

Thanks:)

Well turns out that my friend let me use his  photoshop. I redid it and now i have a nice quality complete map all complete with names, money values and sea borders… I dont think it would be wise to post it since its huge but its pretty similar to whats above.

Now what i want to do is print it off. I have another friend who owns a company that prints banners and advertisment stuff. Wondering what would be the best material to print my image out on. The file size is about 6 feet long by about 4 feet so it would be doable.