UE4 as painting app engine?

I am a self-taught, novice artist-developer so there are many big gaps in my knowledge. That said I’ve made a cool little mobile painting app using UE4 blueprints to draw particle beam, sprite and mesh effects along splines. My interest is in developing 2d painting and drawing apps but adding some 3d elements too. Ideally, I’d like to use UE4 to create a serious 2d/3d painting app along the lines of Procreate, Adobe Sketch, etc.

My main question then is what do you think the best approach for is for 2d painting using UE4? I’ve had the most success using render targets so far (using a variation on the approach outlined here Blueprint Drawing to Render Targets Overview | Live Training | Unreal Engine - YouTube)… should I keep going in this direction? Or is there a better way?

You can achieve that in UE4 with good deal of efforts.

Thanks. My main question then is what do you think the best approach for 2d painting using UE4? I’ve had the most success using render targets so far (using a variation on the approach outlined here Blueprint Drawing to Render Targets Overview | Live Training | Unreal Engine - YouTube)… should I keep going in this direction? Or is there a better way?

Yes, that would be pretty good, yet not the only possible approach.