I was wondering if you've tried underfiring your Glassline pens. E.g. if I applied dots and fused at a lower temperature, would I get a risen dot. I can achieve this effect with these: https://www.milton-bridge.co.uk/products/jewellery-enamel/metal-enamel-pens if I underfire, but wondered if I could achieve the same effect with your pens.
You can fire them at a tack fuse temperature and they might retain some texture if you were to make a dot but they tend to also have a chalkier appearance at tower temperatures. I would recommend sprinkling a fine layer of clear powder over before firing to counteract this.
