There is quite a bit of difference between raising your own child, and becoming a step parent to children who have never known you before. Keep in mind that you will not build this relationship overnight and it will take time and effort. Through positive interactions with your stepchildren, your relationship with them will blossom as long as you try your best.
How To Adjust To And Get Along With Step Children
Even if you have had experience with rearing your own kids, raising them from the role of the step parent is a completely different situation. The mindset that you need to have is that all of your efforts are going to work, but not right away. The step children will be more open to a relationship with you as long as you let them know that you are there to help them no matter what.