Youre half right.
Front and bottom fans are correct.
Top fans and rear fan should be exhaust only.
Right now your blowing the cool air from the front of the case down towards the hot air exhausting out of the GPU, as well as fighting against your CPU cooler with the rear fan, which is just blowing hot air around the case.
You need to get hot air out of the case just as much as you need to get cool air into the case.
Although, your fans are actually right in the picture, your arrows are the only thing wrong.