Thank you for the comments guys.
First of all itīs not a volcano, itīs a meteor impact (or something big that hit the planet).
Itīs a sketch so there a lot of things that doesnīt work Iīll fix soon (maroon cracks, orange tips).
When I saw I think "This is madness" because Iīm a noob and I have a lot of work to do with the planet, but later I think this planet is a good challenge for me.
Iīll update soon.
Thank you one more time for the crits