This is my first draft. feel free to tell what I did wrong

Not much wrong. Keeping the team under the salary cap will become more difficult as the season progresses and Weber, Price, and Drouin return. I don't think Tampa Bay will accept the trade because Paul Byron is seen as a hefty contract and the 2nd and 3rd will probably not be a sufficient package for Cirelli (his cost is about a mid-high 1st and a good prospect). I like the contracts, they all seem reasonable. Pretty solid team for a 1st attempt.

I "forget" the seattle pick, but there will be not much change I think. mostly if they take price.

Tampa need cap space, I give byron at 2.4/2years + choice (base on offer-sheet-calculator). maybe 2 second choice would be better or more retained.

we got way enough for caufield in 2 years.

Nice try on first draft, But noway Tampa accepts the Cirelli trade. Dougie Hamilton gets at least 7 x $8,800,000 and Landeskog already turned down 7 x $7,000,000 from Colorado so Landeskog will probably cost you 7 x $8,500,000.

tanks, I will rethink.
probably change Kotkaniemi and use a 1M or less. so we have 1.75M. maybe enough if we add a NMT.
we can change the 3nd for a 2nd choice for cirelli. (he's not a 1st choice guy)