There's lots of signs on the first level which show you what to do!
I will be as constructive as possible.
1. The signs are not readable due to them being too pixelated.
2. The signs tell what to do, not how to do it. You need both of them.
For the jam though I would create a simple UI with the objective clearly, if you absolutely want it in-world, then make it more readable and have better explanations. Basically make it fool-proof. There's a really great game here called recursive rescale (highly recommend you to try that one out if you haven't already) -where they very clearly show what to do, and how to do it.