Review,
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1:The tan ground were it explodes looks like pudding or mud of some kind, fix that to make like rocks or something.
2:Add more detail towards the explosion part, the sparks and/or fire.
3:Maybe have the goblin clicking the red button to indicate that he just blew up somthing?
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(All my recommendations to your icon, you can use these or not your choice)
Army-of-pandas