Some photographers are afraid to use Photoshop in order to adjust their photos and others tend to exagerate with it. There is a little secret for Photoshop - You have to use it with taste. Don't just drag the Saturation at the maximum point and add a little blur. Nowadays there are so many tutorials on Youtube about this subject. Everybody can learn from there and is for free.

Another important thing is to keep your public or followers engaged. You have to learn to give them what they want and change the subject of your photos. If today you post a monochrome photography, tomorrow you have to come up with something new. People get bored very fast and you don't want that.