I can add a left hand "continuo" part for you if you wish, however there would be a small charge for my time. The music looks quite old, so I may suggest a single-note bass line? However, if you prefer chords, no problem. Note however that at some of the cadence points, there are options for these. Also, the tailed quavers & semiquavers would normally be beamed in today's grouping of notes.
The music is currently in A flat major.... and transposing it to another key is also no problem. If you want it in an easier key, I would suggest dropping it down a semitone to G major.
If you just log onto my pianotime website - go to my contact details, and send me a message with your name & email address. I can give you more details.
Using conventional harmony, here is an example of bars 1-4 below.
The music may be shown like your version (tailed quavers as a vocal part).... or in stave 2, if instrumental, notes can be beamed. The music can also be changed into any key of your choice....
- Extract A flat major
Colin