Looks good, but like your winter G-6, you continued the whitewash under the aircraft. 109F's in Jg 54 came with factory schemes of either RLM 70,71,65 or 74,75,76. The whitewash was applied to the top and sides of aircraft leaving the base visible on bottom, as well as around the canopy. See this picture of this aircraft.
Where the heck are you coming up with Green Stab markings? JG54 Stab is White. Every wartime photo of this bird shows white just like every other Stab JG54 ride.
See, pic above. Stab markings match the green shade of the heart emblem.