okay im gona post how to do animation in gimp,ill do the blend method first

1.creat a new document
2.make the bg layer transparent
3.now paste the images you want to animated
4.duplicate each image,not the transparent bg
5.then go to scriptfu,animators,blend
6.set the frames for the # of layers you have and click the looped box
7.save as gif

post here if you have any quetions