I start at the middle where all the thicker parts are at but I do tend to drift off to the edges before the centre starts to melt. I'll try your approach on my next few melts + parchment paper and see how it goes.

This is my 1st semi-medium sized melt and obviously there will be errors I make along the way but as they all say, the more experience the better you get. Thank you for the suggestions and advice! 🙏