There's evidence of scalping emerging independently all over the world, by North American indigenous, Europeans, etc., and we have it on record that scalping was practiced by the Dutch (although they did more beheading) and English authorities during the colonial period, as well as by US authorities during the expansion west.

To make a claim like 'European colonists picked up [scalping] from the Native Americans', you need to have some substantial and credible evidence. Something that offers some source material/academic authority (so not this

According to Georg Federici's Scalping and Similar Warfare Customs ("a meticulously researched monograph on the linguistic origins of the word 'scalp' and the history of scalping"), it is claimed that:

Among the native peoples of both Americas, scalping was originally not widespread and was practised only rarely and on a small scale. It was only after firearms and steel knives were introduced that the taking of scalps as booty became more frequent. Even then, scalping did not become extensive until the eighteenth century, when warring European groups adopted the custom of posting rewards for scalps in order to terrorize the foe of the moment.

I'm not espousing that as solely the truth, but those are the types of sources I would want to look at. I think what the evidence suggests is that it's slightly more complicated than 'this group taught it to this group'.

Do you have any info to back up your claim?