I'd be drawing the left side of the room without Celeste and Blathers? If so, your payment is perfectly fineStyle: lines and soft shadows?
References:
View attachment 276854
Details: (pose/background/props/etc):
stargazing/night sky/nova lights (Could they be sitting in a blanket om the ground instead?)
Payment: 450 tbt? Lmk if not enough. 4 characters?
Do you want the expressions to be the same as in the photo?
Could you provide a reference for your character? I can't really see their face.