How to lengthen sleeves properly?

[catownedanna]

I have a question on lengthening sleeves. On my first cardigan, with sleeves knit in the round, I simply did all the increases as the pattern called for them and then knitted the upper part of the sleeve a bit longer than said.

Now, is there a more proper way to lenghten sleeves? Should I space the increases out after calculations? Or is that overkill?

Any thoughts? :thinking: