decsis
For some sounds the position of the tip doesn't matter, while for some it does. At least I can't imagine myself saying РЬ with the tip down. And for ЛЬ it's slightly inconvenient too which will affect your fluency in future. For бь, вь, гь, дь, зь, сь, мь, нь well, just other soft consonants the tip is down, really.
My ль is with the tip touching the alveolar ridge and the middle bent upwards to the roof right away behind the ridge.