I use Inkscape but there is a learning curve

PureRef all the way~
https://www.pureref.com/

Man, I've done them on paint a few times. Just. Downloading stuff that fits concept, putting hem in paint, typing them under it. Sometimes I link yt for video refs.

For storing/organizing/viewing reference images I’ve been using Pure Ref - https://www.pureref.com - It has a bit of a learning curve, but is really worth it. This may help: https://i.imgur.com/SIwHMs9.png

Tangentially related, but here is a useful tool for finding reference images for poses and such: https://twitter.com/catatau_6/statu.....65946513330563

i use vizref on ipad but thats probably not what you're looking for