Hello Ms Na Na,
welcome to the board and it's nice to see you here !
I don't know what medium your working in but I've used watercolors , oils and just plain pencil drawings. The secret for me when I work on a piece is to paint what I see. Let your eyes guide you to the correct color schemes . I use a photo of something that I like and I make it my own , now I don't use other peoples paintings but I might select a scene or person in the picture as an idea but I never copy the works of other people. I hope this helps and if you have any questions just ask !