I'm so glad you're here, Leona.

This map is wonderful. I will echo the critiques listed above re: the legend, the shape of the island, etc.

As for Photoshop use, I think this is very well done except it contains no texture. It appears to be a white map under a yellow light, and I think this is because the paper has no depth, irregularities, or other authentic features. Have you ever thought of running a verrrry slight texturizer filter on it (ex: even sandstone), or perhaps of overlaying a scanned in piece of thick paper or cloth? (Or, if you want to get really crazy, you could use a displacement map, too, but that's perhaps over the top.)

Overall, this is a great map. Very well done.