How do I properly do the tricep pushdown? (wayne91)

https://www.youtube.com/watch?v=vB5OHsJ3EME https://www.youtube.com/watch?v=2-LAMcpzODU Hey guys. When I do the tricep push down exercise with the rope cable or V shaped cable, I tend to stand as far back as much as I comfortably can. Some trainers have t..