1-Do not stop funding advanced weapon tecnologies such as jets and rockets, fund it much more. Principally the atomic bomb.
2-Finish the Kriegsmarine fleet.
3-Send Stukas to bomb the British radar towers.
4-Use the Kriegsmarine helped by anti-ship rockets and U-boats to destroy the Royal Navy.
4,5-Triple the bombing of Crete, with help of more developed presicive A4 rockets and use Kriegsmarine to make a cooperative invasion with paratroopers (not really needed).
5-With UK unharmed against a large scale invasion send a massive amphibian assault on the Southwest Britain.
6-Alert Rommel about the allied cammouflaged movements and triple the offensive against the Northern Africa. Eventually winning it against the now fragilized
7-Incetive the japanese to fund heavily the production of rocket planes, heavy bombers, new tanks radar etc... by massive propaganda campaing that "is this how we winned the war yaddle, yaddle... and the USA is hidding a secret super advanced army yaddle, yaddle... making then a even more powerful ally with closed relationship.
8-Defeat UK with use of a high tech Blitz Machine powered up by jets, rockets, heavy bombers and carried based bombers. All before November 1941.
9-Pearl Harbour happens, send two thirds of the Kriegsmarine to help Japan.
10-Conquer Italy and become the one true power in Europe.
11-Now things come ugly, delay the invaision of URSS to March 1943. Giving time enough to build a mass of more advanced tanks such as the Tiger or Panther and equip troops heavily with snow equipament. Build snow approve tank tracks.
12-Finnaly the invasion of Soviet Union. Start it by a A4 precisive strike against the Kremling, killing Stalin and making Soviet morale to down zero.
13-Find and bomb secret production cities in URSS, cripling their production. Oppening the path for a heavilly supplied warmachine across the snow untill reach the Ural mountains.
14-Use a massive paratroop assault to capture the mountains and call an a Japanese offensive by East to make a push from two fronts in Soviet Union.
15-Deafeat the US navy to ensure japanese assault on Russia and relocate forces on pacific to attack northern Russian.
16-Defeat Soviet Union.
17-Launch atomic ICBM's (A9) and air raids against American major cities and military bases. Force then into peace.
18-Share the gains with Japan.
19-Pimp myself on the cheap women mass of the post war.