Im No Hercules

[Entenzahn]

I like the idea here but for a poem that's supposed to make you, a mere mortal, look puny in comparison to the Gods I think you could beef them up a little. Use some grandiose language. I want to feel the awe of these mighty deities.

In that vein, I'd also consider replacing Apollo with someone else. Where Zeus and Poseidon produce clear images (God of Thunder, God of the Seas), he comes off kinda muddled (patron of the arts and professional darts player). I'd either focus on his artistry or pick a God with a more clear-cut and impressive domain.

I'm No Hercules

Who dares challenge father-god Zeus? One syllable too many - can probably cut the "-god"
Deity of the cloud?
Within his grasp lies lightning strong,
Throned, he sits so proud.
I now have the image of Zeus sitting on the throne and holding a lightning in his hand

And whom would swim to Poseidon? The way you normally emphasize Poseidon makes this sound weird in my head. "And who'd swim to Poseidon" works better for me.
To try his trident true?
He rides upon great steeds of foam, cool
With mood he makes storms brew. Awkwardly worded
This is the best one - I imagine Poseidon surfing massive waves with his trident pointed forward. What a bro.

Tell who would play to Apollo,
With hopes to best his art?
Patron protector of poets, I stumble here - too many syllables
With bow and deadly dart
In my head Apollo throws darts and is kind of a dweeb.

I mere mortal, I cannot stand,
To deities as these.
The pantheon stands much too strong, On close inspection the double "stand" trips me up, but tbh I didn't notice it when I went through this part at normal speed
And I'm no Hercules This ending line is wonderful, however
This is not a very visual stanza. However, the rhythm works really well and the ending line is a nice payoff