[How to distort images with background in reference?]

16 hours ago, Tactilis said:

That is essentially what @CometChaser has done. If you look carefully, you can see the base map through the upper map.

The maps look as though they are drawn with different projections, so they will not line up unless you distort them.

You could use the Grid Warp plugin to do this:
 

 

 

 

Through testing, there are three ways:

-Using Grid warp and making the longitude/latitude lines perfectly straight. Only works if projection has perfectly straight meridians too.

Reason is that Grid Warp only shows 1 layer instead of the whole image, so I can't use the coasts to reference.

Example: https://drive.google.com/file/d/1bbrstNSZBG4TTmSt2Nt32lV8TfwsU4QP/view?usp=sharing

You can't see the background, which does have perfectly straight meridians.

-Using Distort This! plugin. Probably the most effective. Only shortfall is that there is a limit to how far you can pull the nubs.

-Making small sectors of the map and using the cropping tools to make the coasts line up, which is easier since area is smaller.

Edit: An example of Method 2 here.

[How to distort images with background in reference?]

So, in essence, I wish to overlay a map on top of another to make a new map. However I can't find any way to distort the image in reference to the basemap: I can only see 1 layer. Is there any way to fix this?

(Google Drive Link because image is too large)

https://drive.google.com/file/d/1Q9znTJNMjX7q-Ts3Nh7MIc3CAcCMfPmL/view?usp=sharing

I want the coasts to line up, is there any way to do this?