New to breastfeeding

I know it takes time and practice and we are definitely practicing. But I'm in so much pain from the wrong latch, and she latches on like a pihrana, even with me trying to help guide her nipple seeking hoover mouth. My nipples are bruised, one is blistered and chapped. The other side she latches a little better. We have an appointment to see lactation consultant Tuesday but roads may be bad in my area from a winter storm so I've been Trying to use tips via Google to correct it but so far no luck. Please help me. I know it'll take more practice but any tips or tricks to help would be great. Until then it's warm showers and nipple cream to help the pain.