I like your performance - it's got 'common sense', which sadly is lacking in many a great performer! By common sense I mean judicious tempo, rubato, phrasing, dynamics, etc. So, congrats!
This piece is textually problematic, though. Apparently there are multiple sources with tiny varations in harmony and melody, although the ones I have seen in print (the Mikuli edition and the recent Henle Urtext) have excellent agreement, if not 100%. So I'm not sure where these other texts come from. Eoghan, it would be a huge service to us if you would post your music score. The version you play seems like an often-played 'variation' to the Mikuli, but it's got ever small differences in itself, e.g. the unusual ornamentation (D# E) to the melody (F#) in measure 10, which is later repeated when the theme returns.
The biggest problem with tempo, textually, also lies in the passage in 3/4, which is a quotation of Concerto no. 2. If we keep the time value for each quaver, you are definitely playing the passage faster than a tempo! However, playing it in tempo would defy the playful character of the passage. I have heard it played fast, as in the Concerto. But there is no indication of tempo change in the text!
Another suggestion - upon return of the first theme your dynamics could be shaped more effectively, i.e., start with pp, not f.