Thanks so much!!! It warms me up to hear such lovely words!
About the tips, I don't really know, but I will try to explain what I do.
The sprites weren't made by me, but the work of incorporating them together was up to me, and the thing, I guess, is just try to make things flow.
And always give feedback of what is happening, I like to give an example of Hollow Knight. You may not realize, but everything gives you feedback with sounds or effects, touching the ground, hitting, jumping, getting hit. These little details makes a lot of difference.