Step 1 - After you have selected your house with floor plans adjust it to read at a scale of 1/8"=1'-0", and 1/4"=1'-0".
Step 2 - create a front and side elevation @ 1/2"=1'-0" using the photograph(enlarge photograph so it is easy to read) . You will need to use graphic standards to help distinguish the sizes of doors, windows, steps etc...... to help scale the drawing.
Step 3 - generate an axonometric using the floor plan at 1/4" = 1'-0".
the link below will tell you breifly how to do this
drawing in isometric
drawing an isometric circle
1 point perspective
2 point perspective