How would you turn a DNA sequence into a picture of a DNA double helix

Asked this before but it was unclear

We'll you've got to put it into the double helical structure, with one template strand and the other strand with the reciprocal base pair A->T and G->C. If I remember correctly each nucleotide is 3.3 Angstroms and there are 10 bp per helical turn. If that help paint a helical picture, i dunno.

Also, don't forget 5' -> 3' and the other strand is anti-parallel.

And phosphate backbone.