I just started this tutorial with photoshop. Here is my progress for it:
New Layer, then Filter > Render > Clouds, then on the same layer Filter > Render > Difference Clouds
Repeat this with a second layer. Set the layer mode of the second layer to Linear Dodge. Select all and use Copy Merged, then paste, to get a new layer. Use Invert on it. Set Opacity to 90%, again select all, use copy merged, then paste and you should have a Mountain Clouds layer that is pretty close to the ones made in GIMP.
I used Land Clouds out of GIMP, because I liked them better, but I'm sure you can get a same result in photoshop. I also made 2 land cloud layers and I used a mask on the top land cloud layer. With a soft brush I went over that mask to blend those two land cloud layers together. I just did this for some options regarding my terrain. I liked some stuff in one layer and some in the other.
For the sculpting (after I had cut and placed all my mountains) I used a soft brush (0% hardness) as eraser, 35% opacity, 12px (my image is 4000x2000). I only used this brush for any mountain layers that overlapped each other and needed to be blended. Sometimes I drew a greyish color on the layer underneath, if I erased too much. Then I merged all mountain layers. I also ctrl + left clicked the thumbnail layer image of my map to get a selection of my landmasses, then inverted the selection and used this to delete any mountains on the mountain layer that were over the oceans.
Now I copyied this layer, just for safekeeping.
After that I ctrl + left clicked the thumbnail layer image of my mountain layer and used modify selection > feather (with 5 px), I inverted the selection and deleted that part. Again, I select all mountains, I use modify > contract (with 5 px) to make the selection smaller, I invert it and use modify > feather (5 px), and delete it. After that, you should have a pretty smooth mountain layer. The pixel amount can vary depending on what size your image is. The smaller the image, the smaller your feather amount should be. (I forgot, now would be time to use the gradiation curve, like in the tutorial.)
I use my eraser brush (same settings) to erase any left over weird spots, like all the black spots inside mountains etc.
Now I make a new layer on top of the mountain layer, I set opacity to 60% and layer mode to linear dodge. I use a brush with 33px, 20% hardness, 20% opacity, color: #878787 (or whatever fits your medium map color).
I use the toning brush (the 3rd one) from this set: https://www.deviantart.com/pearlpenc...2014-442921937
But I'm sure the standard photoshop brush is fine enough.
Now I gently paint around the edges of the mountain to make to blend them into their surroundings. At this stage you can sometimes spot some left over hard edges on the mountain layer, so I go over this one last time with the eraser here and there.
That's my progress so far. I'm not sure, if this will even get me a nice result in the later steps of the tutorial, but that's how far I got yet. Here is my result so far:
anicca_eriond_mountains.png
I'm not sure, if my mountain placement even makes sense and if it is too much or not.