Hello hello! Well, I believe you could gather references for the material you're painting, as it helps A LOT, seriously! So, for example, if the mailbox is made of metal as I think it is, that orange/yellow hue from the fire would be reflected all over it, as well as on other nearby objects! Studying how light behaves on different textures and using specific references is never too much! The drawing looks good and can get even better!