In my experience the PFL is probably THE weakest area of the PPL Skill Test demonstrated by most applicants; please don't waste your money by attempting the PPL Skill Test before you're ready for it.
Other weak areas - poor flying accuracy and over reliance on map reading during the navigation section, exaggerated stall recoveries, poor recoveries from spiral descents, poor use of R/T.......
There should be nothing in the PPL Skill Test (there is NO SUCH THING as a GFT, by the way!!) which you won't have done before. But DON'T rush into attempting the test until you're ready for it!!