This is great. And so glad you didn’t flip it, as the upside-down pose makes us pause and examine it closer.
I particularly like the different segments of color, which make it so eye-catching, but it’s probably due to that that I’d like to see a slight crop from the right. The pink area over there is much lighter and brighter than the reds and greens, and keeps pulling my eye off to the edge. I think eliminating some of that bright canvas (again, by cropping, not simply selectively toning it down) will bring much better balance to the frame and keep our focus on the spider.
Balan, this looks great. The spider stands out well with all of the details that you’ve got in it’s legs, face and eyes. I also like the colorful surroundings.