Help building my first deck

Hi everyone,

my friends gifted me a precon (Jumpo Scare) for my birthday last month and we have been playing commander together ever since. Last time i played any MTG was 20 years ago so i'm a bloody beginner!

Now i have been trying to make my first own deck and i chose Pantlaza as my commander. Could you guys maybe look at my list and check if i missed something or if i made any mistakes? As a beginner it's really hard to tell if the deck works without having played it. Do i have too much ramp in there ? Any really good synergy cards i might have missed?

I would be really thankful for any kind of input.

Here's my decklist
https://archidekt.com/decks/17922906/pantlaza