Okay this is fundamentally a writing critique, because if I was going to take this course, I'd be judging the quality of your writing to see if I think I can learn from you. My comments in italics. I'm NOT a writer but this is what I have personally picked up on.
Our 'Writing when you have a baby or toddler' workshops take into account the additional responsibilities and time pressure that comes with caring for children. I help you be creative and be a great parent .
You start with 'our' then change to 'I'. Keep consistent.
Lose the extra space before full stop on last sentence.
This free introductory workshop gives you a chance to find out about the course, and meet the teacher (me!). But because we never squander an opportunity to write there will also be a writing workshop on the theme of lost things.
Lose the 'me!' - unprofessional and over-familiar. Switch the clauses - 'chance to meet the teacher and find out about the course'. No Oxford comma needed. Jury is out on starting a sentence with 'But'. If you do, I'd put a comma in after the 'write'. It also doesn't really make sense to say 'this free intro workshop...' followed by 'there will also be a writing workshop...' Just say 'In this first session, we'll be writing on the theme of 'lost things' - or similar, you get the idea.
What you'll learn in the workshop:
Having young children (mine are big now) was actually really productive time in my writing life. I'll share some of the daily routines I adopted to sustain my creative practice during the busy times of caring for babies and young children.
Lose the 'actually'. You're also missing an 'a' before 'really productive'.
My writing practice is often rooted in my love of archaeology and old artefacts so we'll also do a writing exercise on the theme of 'lost things', in order to get your creative juices flowing.
Ah, now your workshop theme makes sense - it was really random when you first mentioned it above. You've now duplicated this info though, so re-word your stuff above. Lose the comma after 'lost things'. If you keep the 'lost things' thing in the first section keep consistent on your use of '' marks so either lose them here or add them above.
About the course:
I’m a single parent (and novelist, playwright, creative teacher, teacher, film director, producer and lots of other things). This is the course I wish I had chance to do when mine were tiny.
Okay this isn't really about the course is it? That's about you. If you're going down that line, state one or two things you've published. Take out one of 'creative teacher' or 'teacher'. I'd take out 'creative teacher'. I'd also take out the brackets, and just list all your things so they are treated equally. I'd replace 'mine' with 'my children'.
Or, actually say what the course is - is it one hour with homework tasks to encourage students to try new writing techniques. Is it life writing, fiction, history, journalism? What will happen at the end - will the writing be shared, is it collaborative? What will a student gain? Confidence? Skills? Portfolio?
I am a very encouraging and supportive teacher, come along to the session and start to make time for your creative life along with being a parent.
Last bit:
Two unrelated clauses - I'm a fan of using a dash in this case rather than a comma. Suggest alongside rather than 'along with'. Or something else- you've already got an 'along' in the sentence.