Absolutely love Spencer Ogg patterns
@Celia .
They are very well drafted and the instructions are excellent. She has a detailed instruction list with good photos and most patterns have a well produced video tutorial.
I haven’t sewn the Starlight myself but I’ve done loads of others. I’ve just finished the
https://www.spencerogg.com/product/boothstown-backpack/ in leather using my new HD9 and am delighted with it.
Diane has a YouTube channel with lots of mini tutorials so you could check that out first.
Having done several bags by other designers, of varying quality, I usually look at Diane’s patterns first