pie, try to move more limbs and add more movement. example before they headbutt, they just stay in the air, maybe make them start falling then they headbutt. Aswel the swords just appear, maybe try make them draw the swords. keep practising tho!
edit: also when you post it make sure you half the size of the file or make it a third the size, when you save as gif, select "shrink frames by" (1/1 change it to 1/2 or 1/3) :)