Good idea, but try to smooth your edges.

Thanks for the advice, my friend! I used only the mouse, I am without pentablet where the result would be much better!

You can use the blur tool with your mouse.

you can either use "Eraser" tool to slowly erase along the edges or use "selection" tool
then add a feather (low amount) ,then delete to have soft edge.

move the planet further from his legs.. add shading to the planet to make it look like a sphere

Thank you all !

pretty cool author

Great idea, but I'd reposition the red planet in the background, making it much larger and higher in position. As is, it takes away from the battle, by looking like the one fighter is standing on it.

Thank you very much, Kushpatel and MossyB !

Lovely work author! What an amazing idea! very well done.

Thanks, JoeCacia !