Well, you know, in my experience, working with soft, pastel colors/markers is really a eye-pleasing thing. They make drawings super pretty like watercolor based drawings. In your case, it fits well with your drawings but you do need to make them a bit more darker so that the camera could show your characters more. :>
Wait what? "I am pretty bad at it as you can see" Oh my gosh, I've never seen such an underrated critique. Your drawing is actually good?? That thing would be a bit hard for me especially since you're good at proportion and making your drawings big (The bigger it is, the harder it gets).
Aha, I know what you mean. There's something different that comes to traditional drawings that make them more special.
Markers are really expensive and I barely buy expensive ones. I bought a twenty-something priced chisel tip markers because I'm cheap 😔and I think they work fine. There are cheaper ones around the internet, try this one: https://www.ebay.com/itm/MILO-24-Art-Marker-Set-Dual-Tip-Artist-Markers-Brush-And-Chisel-Alcohol-Based/113805329103?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D20160323102634%26meid%3Da88744b72551456f91bba278c79aeb8b%26pid%3D100623%26rk%3D3%26rkt%3D6%26mehot%3Dlo%26sd%3D192797472769%26itm%3D113805329103%26pg%3D2047675&_trksid=p2047675.c100623.m-1