On the hex grid, think of the active tiles as if they "want' to expand out in every direction, but each of the adjacent tiles has a condition, like certain amount of resource consumed, or certain temperature, to make it able to expand to that tile. Look at the tiles towards the direction of the creature you want to form, and try to meet the conditions to make them expand in that direction.
At first you will not have all the color resources you want, so some of them you will have to sleep until later days to get the other colors. I recommend only sleeping when you are out of any resources that you would need. As for temperature, try to manage it so that it is within the range of the conditions you want, but also outside of the range of the requirements on the tiles you want to avoid.
When a certain tile you want to avoid is unavoidable, like maybe it has similar conditions as the one you are trying to get, you can click on it to use blockers, so that no matter what, it will not activate that tile.
Sorry, I explained it with so many words 😅, but I hope it helps a little.