the best way to walk on cructhes with a sprained foot

I think this is something that no-one even thinks about until they have to use them, I sprained my foot about three weeks ago but as uaul I didn't go to a doctor and thought i would just rest it and I tried using a walking stick that I had here but I didn't know exactly how to use that either, so I did with out it, three weeks down the track I am walking without a limp and still feel a little pull in it at times...I hope you get better soon,....