I am a theist, what do you think of my proof for God existing?

[Mister Agenda]

Dear atheists colleagues, let you plan in your mind how you are going to prove the existence of atoms in objective reality outside of concepts in your mind, step by step.

When you have accomplished already in your mind the plan, then redact it in words, step by step.

Then you can follow your written down plan and go forth into objective reality to get everything and do every act needed to follow faithfully your plan: to arrive at the certainty of the existence of atoms in objective reality outside your plan as conceived in your mind and put down in writing, by which written plan you have guided yourself in arriving at the certainty of the existence of atoms in objective reality: outside of concepts in your mind and words in your written plan.

Objective reality can't be proven to exist. Its existence is an axiom. You either take it as a brute fact or lapse into solipsism.