How to blend different parts of the body during hair removal to look natural?

I am currently researching about laser hair removal. I am a decently hairy male. I am planning to completely remove the hair on my back, shoulders and buttocks. I would like to also greatly reduce the hair on my upper leg and upper arm so they can blend into my eventually hairless body parts. I don't want my arms to look artificial with the cutoff on the forearm or my legs on the calfs. I am not sure how to do this. Should I do one treatment on my joints then a few more on the upper parts?