I need some input on the presentation I gave.

我刚做的简报需要一些意见。

It was good overall. But you need to make some small changes.

它整体来讲是好的。不过你还需要做一些小小的更改。

What would you suggest?

你建议怎么做呢?

I would put the production information before the cost so that it sounds justified.

我会把产品介绍放在价格之前，让它听起来比较合理一点。

presentation n.提供;外观;赠送(仪式);报告;表演

justified adj.证明有理由的，合理的