Is it possible to view tag wiki edits done by myself?
I currently don't see this kind of functionality anywhere, not also in the profile. Am I missing something?
I have searched the meta, but I didn't find anything in this reference.
I don't think there's a dedicated section for it. You can, however, go to Activity tab in your profile, and then go to either suggestions if you suggested those wiki edits, or revisions if you had enough reputation to just edit them. You will be able to find your tag wiki activity there.
You could also try making a query at data.stackexchange.com to get that info, but I'm totally ignorant about how data.SE.com works, so can't help you on that one.