I can't see it being too much of a issue, I'm sure there are plenty of examples using similar elements and art styles. While they do look similar , I think you have changed it enough to quantify drawing inspiration from it , which is what most of art is :D
Found a couple of similar examples so you should be quite fine :)
https://www.google.com/imgres?imgurl=https%3A%2F%2Fc8.alamy.com%2Fcomp%2...
https://www.google.com/imgres?imgurl=https%3A%2F%2Fchrisdoescomics.files...
https://www.google.com/imgres?imgurl=https%3A%2F%2Fthumbs.dreamstime.com...
I can't see it being too much of a issue, I'm sure there are plenty of examples using similar elements and art styles. While they do look similar , I think you have changed it enough to quantify drawing inspiration from it , which is what most of art is :D