Right, only the images associated with the main record on frmFind will display in the subform. Doesn't matter if there are 1 or 100 images associated (however, you did say only 4). Size the Image control and subform as you want and set the form to Single or Continuous view and scroll through the images same as you would scroll through any recordset on a form.
And you might consider arranging controls on a Tab control to use less 'real estate'.