After watching Molly's videos I've learned a few things and I thought I should also apply them. I bought a bundle brush from Creative Market and I've tried a few of them. Totally recommend them, link here. Btw, I really loved your recommendation for Calligrafile <3 and also I've ordered a magnetic sleeve just like yours :)) link here.
My main focus on this project was to play with the smudge tool in order to achieve a waterish effect. I'm not completely happy with the final result, but I think for the first attempt could work :D
Here on my Instagram, I've also posted a video process.
Hope you like it!
p.s. original background image found on unsplash.com - by Jakub Dziubak.