Welcome to Steemit kabayan. This is an amazing platform. I wish you all the best. While these photos are free to use under the CC0 Creative Commons, you posted these giving an impression that these are taken by yourself. There are plenty of materials to guide you in giving credits to the sources of your photos. I will visit your blog often and be waiting for your future posts I may be able to upvote (not this one though for the reason stated above). Welcome again and good luck.