How one and one's is different from other indefinite pronouns The possessive of one (one's) is formed the same way as the possessive of other indefinite pronouns, such as someone (someone's), but it is used a bit differently. For most people, one is consistently used with the possessive form one's.
The difference is that "one" puts more emphasis on the number such as I have 4 computers and a printer/I have 4 computers and only one printer. So when you say a feature of my work or one feature of my work, it means the same, with the only difference that "one" is emphatic compared to "a".
BroadwayWorld: Who Played Mrs. (Act One) in Sunday in the Park with George
Who Played Mrs. (Act One) in Sunday in the Park with George
BroadwayWorld: Who Played One of Boy Bather (Act One) [alternate] in Sunday in the Park with George
Betty (Act Two) West End Sunday in the Park with George 1990 Billie Webster (Act Two) West End Sunday in the Park with George 1990 Blair Daniels (Act Two) West End Sunday in the Park with George 1990 ...
Who Played One of Boy Bather (Act One) [alternate] in Sunday in the Park with George
One-to-one is used when you talk about transfer or communications. You may use one-to-one when you can identify a source and a destination. For eg., a one-to-one email is one sent from a single person to another, i.e., no ccs or bccs. In maths, a one-to-one mapping maps one element of a set to a unique element in a target set. One-on-one is the correct adjective in your example. See Free ...