new to using flashes....
...set-up
.
3x speedlights
key high camera left,
fill low camera right,
rim on floor pointing up (but i think not at back of head enough)
1, should rim light be behind head on a stand or on floor pointing up?
2, does rim light need a modifier?
3, im getting quite a hard shadow from the key light (highish off camera left), is it because im using magmod sphere and its quite small?
edited and un-edited
I tried a self portrait once (see my account picture). It took a while to get it right! Your's is pretty good.