You need to draw the sea first, not the land.

There is a pdf Mapping Guide in the issue's folder here:

C:\ProgramData\Profantasy\CC3Plus\Annual\Issue 173 - Darklands

CA132 is the February issue of the 2018 annual, called "Dungeon Walls". Does this look like the style you have things missing in?

EDIT: Oh, sorry! I couldn't see Quenten's answer when I did this one, even though it was hours before.

Try searching the Symbols folder for things like "Skeleton", "Bone", and "Corpse".

When you find some these will be the PNG files. What you need is the corresponding catalogue file for that folder of PNGs, which is usually in the same main folder the PNG folder is in.

But I'll let you into a secret. The real techs are here. I always seem to be telling people to come to the forum because I can't solve the problem myself on FB.

This is one of the videos Joe referred to above.