Question having a lot of trouble using imported 2D sprites

hi guys! i'm really stuck don't know what to do.
i'm very new to game developing and i'm trying to do some brackeys toturial, but i don't understand how to use imported assets.
i've imported a free package called "sunny land", created a grid, and palette, imported the assets (that are pre sliced from my understanding) and now it seems that the sprites are way smaller in comparison to the grid, and are barely visible when painting them on the tilemap.

i've been looking for toturials on how to use imported objects but i'm really lost. any help?

i've uploaded a picture for you to see what im talking about

 

Your pixels per unit is looks to be set wrong on the sprites. It defaults to 100 pixels per unit, so I suspect you left it at the default. It should be set to the number of pixels you expect per tile. I'm guessing here, as I can't see the source image, but looks more like a 32x32 or maybe 16x16 tilesize.