Saving and exporting your work
MyPaint can save/load images as PNG, JPG and ORA
(OpenRaster, an evolving standard in the open source world).
Save in ORA when you want to pause your work and continue in MyPaint later, it is the only format which also stores your layer structure.
To allow GIMP to load ORA files you need to install GIMP’s ORA plugin. You can find it here. If you have no layers in your MyPaint image you can instead use PNG to export to GIMP directly. For best quality, stick with ORA and/or PNG. Avoid JPG until you want to publish your finished image on the web.
The Save Next Scrap feature of MyPaint (shortcut F2) saves a “scrap” of your work with an ever increasing numbering (settable in preferences). It is useful for quickly experimenting with different concepts and ideas.