Welcome Yandor. I believe this community is one of the friendliest, helpful and useful out there. I'm sure you'll get all the help you need, to take your maps to the next level.

I agree with Beowulf's comments. In order to give better advice it would be useful to know what program you used to create the maps. On your Cairan map I would start by suggesting that the scale of the map means the lines marking the borders should be thinner. Also the effect of only drawing some of the borders can be quite confusing, I would suggest completing them, even though the terrain features might be natural borders themselves. Also I think the map could do with more contrast between land and sea. The dark blue of the sea and the dark green of the land are IMO a littel too close. Maybe you should try experimenting with more colour contrast there.

Cheers
Torq