Building my first deck.

So, I'm building my first deck and I have 62 cards right now, 24 are red mana, 16 are forests, and the rest are some cards with basic +1/+1 counters and buffs. My commander is tannuk steadfast second. I need advice on what cards to add to make the deck as good as possible/

https://preview.redd.it/at8ywvhk003h1.png?width=462&format=png&auto=webp&s=8b06504c05ebe2a84c65af9f9dc5087b6e713002