The phrase 'become more skilled' is correct and usable in written English.
You can use it in any context where someone is increasing their skills, knowledge, or abilities in any field. For example, "He dedicated himself to his craft and worked hard to become more skilled as a carpenter."
They become more skilled than if they just played on grass".
The North, meanwhile, has become more skilled at launching cyberattacks — some through China — at South Korean banks and television networks, including a devastating series of intrusions in March.
In terms of the time we are investing in helping teachers become more skilled professionals, we rank 30th out of 36 developed nations.
But in recent years manufacturers have become more skilled at producing test cars that record low emissions and very high mpg.
Twenty-nine per cent who failed first time said they had learned from their mistakes and 27 per cent said they had become more skilled with the extra practice.
The work has become more skilled, but the number of jobs has declined: 257 people are employed at Ardagh's Knottingley plant today, only a third of the number who worked there 30 years ago.
As former C.T.C. Chief Cofer Black testified, Al Qaeda became more skilled and attracted more adherents throughout the 1990's, becoming in essence a small army by the end of the decade.
The agricultural revolution in Central Africa was paralleled by another nutritional change as people became more skilled at catching fish.
But once people became more skilled and also started wearing protective gear, the injury rate was lower.
These games existed before eSports was even a term, and the 'metagames' of each took years to emerge as players and audiences alike became more skilled at them.
Herbert Lom, as the series became progressively more ridiculous, became more skilled at portraying Dreyfus's delectable moment of breakdown – the point where he acknowledges the overwhelming, almost metaphysical agent of chaos arraigned against him: Clouseau.
