It's a Postcard book

I am intending to produce a postcard book for the visitors of Bangkokian Museum by focusing the foreigners. which contain five postcards demonstrate the highlighted objects inside the museum and a cover of the image of early Bangrak Street in 1920s. Each postcards are painted using watercolour then composed and provided the information using Adobe Photoshops. I tried to apply the tones softly create the feeling of old days while giving a clear explanation  through the typeface I selected.