Help with character making (Owlin)

I am making a multi class character. But I have no idea if it be okay.

It's an Owlin Artificer and Warlock who's a Folk Hero, and it's preferred form of attacks is long range snipping enemies with a crossbow (at the start, but be a gun towards mid or late game)

Of course, flight and it's natural stealth abilities is one of the reasons why I picked an Owlin. Could anyone help me find tune this a bit?

Context ...

Starting level?
Target Levels (Lock? / Tinkerer?)
Subclass you want to be?
Campaign or short hook?
Party composition?
What do you want to be (damage dealer/healer/support/control/sniper?)

Sounds like you want to snipe from afar and maybe flying. Why the xbow/firearm compared to eldritch blast?

Be an Owlin Artillerist/Fiend Pact. You are the hunter in the forest. Your goal is to be the most owl you can me. You see mice in the underbrush you swoop in to kill it with no mercy decorating your feathers with their insides. If the underbrush is too think you burn it all down. You're not one with the forest. They are just your hunting grounds. Exterminate the mice! Exterminate them all!!!!!!!!!!!!!!!!

Use guns because bows are for a pansy elf. You're no elf. Your Ted Nugent if he was an Owl. Become the spirit of America. Kill off entire species sending their souls to your patron in Hell in exchange for the ultimate murdering powers. Kill. Kill. Kill.

Edit: You're an Owlin Folk Hero known for being the best hunter. Brutal and unforgiving truly sinister in how lethally swift and silent at murdering defenseless forest animals.