Blueprint impossible to place and adjust against a wall

    Its really driving me nuts im trying to place a small plank pattern on a wall but i cannot seem to move it up i go through the wall the whole time.. can someone help a simple noob

    Once the blueprint preview is freezed (by pressing LMB), you can raise the y-position (up axis) by pressing + and -, and move it forward/backward/left/right by pressing your arrowkeys :)