Ok, I have found the way to match top and side view.
It allowed me to match the position of points on two planes - horizontal and vertical - rather than on one and ending up with distorted model.
Here is what I did:
I have put reference image on a plane, subdivided it - first horizontaly when looking from top. I moved the lines to strech image and match ...
You could draw the lines from top view (something approximately like that):
Create another object with the side view as model, then shrinkwrap your first object (Wrap Method > Project) to this second object:
Apply the Shrinkwrap modifier:
Begin to move the vertices to sculpt all the slots, etc:
Enter Face select mode
Select and delete this face:
Select and delete these faces:
Select and delete this vertex:
Enter Edge select mode
Using the F2 add-on fill the large hole with faces:
F2 allows you to select one edge of the hole, position the cursor inside the hole and then create the face with F. Select the left most edge of the hole,...