No problem at all converting a flat scraper into a skew.
If it's HSS it will take some time and a bit of your grinding wheel life, bluing of metal not too critical (HSS will cut at red heat) but don't be tempted to quench cool it when getting near fine cutting edge region as shock cooling of HSS can cause micro cracking of thin stock.
If it's older carbon steel then do not get it hot enough to produce any colour on the steel else you will have to re-harden and temper to get the correct hardness back.
No problem cooling Carbon steel in water whilst grinding, just do it little and often so that it does not take on a colour.
Good guide when grinding steel, if it's too warm to touch stop and cool.