I firmly believe that painting, as well as the other arts (music, drama, dance), are a gift from God. Paintings can really bless and minister to people. Painting(s) in itself is not evil - it's what you paint. If you're painting dragons, serpents, or things that are perverse, then you may find yourself with demonic problems. However, if your painting is influenced by the true Lord Jesus Christ, which would include painting things that are lovely, admirable, and noble (etc)[Phil. 4:8], then I believe that you are in God's will and your paintings should be a blessing to yourself as well as others. I hope this helps. God bless you sister.