How can you keep your shoelaces (on something like an oxford or short boot) from getting caught up in you pant leg and weirdly scrunching up your hem?

I guess I just never wore many "tie" shoes before, but every time I wear my cool and jazzy new menswear oxfords the hem of my jeans or trousers gets caught up in the shoelaces and bunches up the pant leg unattractively in the front. I'm always having to tug and pull them down over the shoe laces, which gets annoying.

Any suggestions on the art of tying shoes?