My issue with this kind of stuff is that I get really stressed about doing a bad job of the painting, to the point where I can hardly start projects like this anymore.
I got decent at painting WH40K but I haven't touched that stuff in some 8 years, and its much easier to paint metals and tanks than horses and fabrics.
I've literally had a box of Perry British hussars lying around in my room somewhere for months, I just need to man up and do a shit job of them so I can get more and improve.
Maybe you can relate, I just would hate to ruin models by really fucking up the painting.