Hey no worries, thanks for reaching out (genuinely though, feel free to ask me anything!), I've also felt the struggle of fighting an uphill battle in terms of art/graphic design stuff... I often get overtaken/outcompeted by my peers & even younger students (which is quite scary to be honest but such is life XD). What matters is that if you're having fun, keep on doing what you do!
Also yeah, you're pretty much correct btw, it's mostly about finding your own style, What types of colors do you like? What sort of games do you enjoy? What kind of artstyle do you prefer to draw? etc. This is a culmination from all of your experiences! An easy way to find this is to make a visual reference board that strictly contains things that you like (followed a skillshare class for this, helped me quite a bit when I was lost trying to find my own style)
It's also great to know your own strengths & weaknesses! an example of this is that I'm incredibly good at picking colors (in my opinion atleast XD) but I'm extremely slow at drawing illustrations so I usually prefer to do pixel arts instead. If you don't really know your strengths & weaknesses, well... experiment! See what sticks, see what doesn't, then iterate on it more! (Try out new colors, new artstyles, try out other games & see what makes them stick)
For this particular game I'm acting as the "creative director" instead of the main artist, I'm still the one making all the artstyle decisions though! The way I approached this is by getting a vibe down first, I'm sketching out designs while listening to a music that's similar to the vibe that I'm trying to go for (for the title screen, I listened to this & for the gameplay stuff, I listened to this). For the title screen I was inspired by one of gal shir's old artworks (this one in particular), for the characters I was heavily inspired by this, and for the colors I was 100% inspired from Cult of The Lamb's title screen.
As you can see, it's a combination of all these interesting stuff, but I added my own flavors/preferences into the mix (Persona's Stylish UI, Hyper Light Drifter's colors, etc). I'm 100% planning to share a bit more detail about the process of designing this game if you're interested! (currently creating a devlog right now, planning to publish it to my YouTube Channel in the coming months, check it out if you're interested :D)
Art is defo quite a long journey & it's incredibly subjective, there's no right or wrong way to do things, so take your time & enjoy the process ✨!
P.S. I just saw your previous games & your twitter btw (you're making VR worlds! that's incredibly AWESOME!!) I think you're doing great, keep going!! I personally just got a Quest 1 a few months ago & I'm having a blast trying out VR stuff XD, this medium defo has a lot of potential so keep creating stuff! Cheers ;)