Any sewers use interfacing/stabilisers

[WanderingJules]

I’ve been using Vilene iron on medium loft stabiliser stuff for make up bags, but it’s not stiff enough to be able to make corners/edges look square/sharp professional IYSWIM.

I’ve used the thin interfacing in the past (awful stuff), and thermabond, but I found with that, my fabric crinkled. (My fault probably, the way I put it on, I think).
I’m currently using the Vilene stuff, which I love, but I need it a bit stiffer, somewhere in between the interfacing and Vilene. Any recommendations?
Thanks in advance 💐

[WanderingJules]

Sorry, it’s the Vilene Fusible fleece I use.