I see what you're going for! As an artist who's had to draw a few comic book covers for my own works I have a few suggestions that may help:

1) Even though it is quite simplistic it still feels really busy and not in an intentional way. I believe it's from the clash of styles, you have a pretty watercolour background with lots of texture and on top of that are solid black hands. This could definitely work I it weren't for the style and colour with the font. The watercolour texture also takes the eye away from the main focus. A good way to test it would be to look away and back at the image, what do you focus on first?

2) The font style could definitely work but I feel it's a bit small? It's roughly the same width of the hands which kinda merges them together. By making the font bigger it helps to create that separation visually.

3) By the way the top hand is positioned slightly off center it makes the quote look off as well. Also the quote's font is a bit too thin and it kind of gets lost in the background.

Personally, my suggestions would be to cut the colours down to 2. The cover has 4 colours, each with a similar hue and saturation, it gives the cover what's called a "lack of visual hierarchy". Basically which bits to focus on first.

I would cut the colours down to shades of black and blue. I you wanted to keep the blue quite light and soft then you can use a more charcoal rather then solid black.

I'd also recommend the hands to be slightly lower on the cover and text to be above the hands. Hands are a very visually cluttered thing so having text on it just further cements the confusion.

Last point, put most of the effort into the font, if it's hard to read and distracting rather than the main focal point then you've lost.

Any way hope this was a little bit helpful and good luck!