How do I put my little girl's hair in bunches?

I’m a dad with a 3-year-old daughter. I’ve been trying for ages this morning to put her hair in bunches but have had to give up. Surely it can’t be THAT difficult!!
Somebody did it once for her & it looked really cute. Her hair is just below shoulder level. Every time I try to separate it & bunch it up it just ends up with strands sticking out all over the place, & as for getting those elasticated doofers on, that just completes the disaster.
Yes I’m useless!
Any hints, tips, or pointers would be gratefully received!