overlaying registered image on to large fixed image

I have 2 images, moving and fixed and I'm trying to overlay the moving picture on top of the fixed picture so I can see the full fixed picture with the section of the registered image.

The moving image size is 512X640 and the fixed image size is 3000X4000X3. Using cpselect i have selected 4 moving and fixed points and done registraion.

tform = fitgeotrans(movingPoints, fixedPoints, 'projective');

Rfixed = imref2d(size(fixed));

registered1 = imwarp(moving,tform,'FillValues', 65535,'OutputView',Rfixed);

figure, imshowpair(fixed,registered1,'blend');

I have done registration without trying to overlay on top and it worked good:

tform = fitgeotrans(movingPoints,fixedPoints,'affine');

recovered = imwarp(cam,tform,'outputView',Roriginal);

imshowpair(IR_image,recovered,'blend');

Tnx.