any tips on hand placement?

Have been practicing cutting my hair a few times now with a three way mirror and while it’s been a big help I think I’m struggling more with correctly holding the clippers to get optimal result when it comes to edging. I have a wahl magic clipper, andi t outliner trimmer, and a wahl shaver (in case needed for reference). Would grippers help at all either? How long did it take you to get the hang of the craft haha

Any advice is welcome!

I usually go for a 1.5 on top with a temp fade (including back)