Well, I have some experience with designing boards & games, but my style tends to be quite different. There are a few other cartographers here that could match your style more closely. It really depends what kind of mood and vibe you're going for with your board game. I know I can create a board with ridiculous amounts of detail & little things to look at, however, it's going to look more cartoony or old-school, and not as digital as the maps you've shown.