Alrighty, pretty good but here's a few things to remember:
telo pona lon (blade) pona <<<Remember to use 'li'. An idea for blade is either 'palisa' if you want it to be short, or 'palisa utala' for more accuracy. You might want to add 'loje' to 'telo' to classify it as blood.
mi lukin sin mi pona lon moli <<<Separate out your sentences here, and again, don't forget 'li'. In fact, a reconfiguration of this sentence might be useful.
ale li tawa poka/tan mi <<<'insa' could be better than 'poka' or 'tan', and you might want to use 'ale ma' (everything of the earth) if you want to be a bit more Earth-specific, or just 'ma'. I still like 'ale' though
Here's my try, based on yours:
telo loje pona li lon palisa utala pona.
mi pilin pona lon moli.
ale ma li tawa lon insa mi.
You did a lovely first attempt, even if there were some errors. You'll defs get the hang of it, keep going
I'd like to see more haikus from you
(Heck, maybe even a toki pona original someday