The perspective in his paintings is simply amateurish as
>>10186530 illustrates. And yeah, this is something he would have worked on if he'd been admitted to the Vienna Academy.
The reason I suspect the admissions officers rejected him is because his paintings have no life in them. Not even in the strict sense, as in people, but there is no glimmer of imagination that they thought could be served well by letting the young Adolf hone his technical abilities a little more. If he'd got accepted, he may have been a competent draughtsman and little more.
He seems to have been channelling Caspar David Friedrich in some of his landscapes, though the problem is he paints with nowhere near the level of detail Friedrich does. Maybe his problem was that he simply sent them the wrong works for consideration. But all of the ones I've seen from Hitler scream "derivative". He respected tradition too much, which probably suited him better in politics than in art.
