To make a little planning for the future, I decided to take the following steps in the next three or four weeks:

step 01: finish the vegetation and optimize the color scale of it, because the difference between different vegetation should be better worked out
step 02: recreating the final coastlines and adding another shading for it
step 03: creating a little overview map in order to locate, where the island is located
step 04: creating and attaching a kind of legend
step 05: creating special points of interest and the legend for them
step 06: correctional works
step 07: aging the map to an "ancient" epoque, transferring it into more yellow and red and brown and creating an "old paper" look
step 08: last correctional works
step 09: finish