It seems that even in Arcadia, you walk beside me still.

You can make custom brushes or (i'm pretty sure it's still a thing?) download new ones from online, but personally i found it's not necessary. It has a lot of brushes and they're pretty versatile, it's just a matter of knowing what to do with them, but that's up to you.

My absolute favorites are the Basic-4, Pencil 2b (BEST most natural-looking pencil), Pencil-5 Tilted, Marker Chisel Smooth, Marker Details, Marker Dry (THE goat, a lot of my paintings are exclusively done with this), Bristles-2 Flat Rough, WaterC Flats (both Big-Grain Tilt and Decay Tilt), and WaterC Spread WideArea. Like obviously you're gonna have to figure out what works best for you, but these are really great brushes

If you want to color glaze over a grayscale layer, don't always do layers with the "color" setting. Depending on the values you're gonna need soft light, overlay or even color dodge, and sometimes you're gonna need to stack them. It's a bit trial and error-y

Also if you want to change the color of something, i'd rather go with "slope, offset, power" (under filters->adjust) than "hsv adjustment". hsv makes it kinda muddy

And speaking of filters! "Color balance" is the GOAT, not kidding it's your best friend. Great for when you have a sketch that feels a little lifeless, but you don't want to go and fully color it. If you have a dark, a base and a highlight, you can adjust them in color balance to make them pop, and it brings out the texture in your brushes too

Color adjustment curves is another great one, just use in moderation

Sometimes I'll take my piece (all layers merged into one beforehand, if you use more than one. i draw on a single layer usually), duplicate it, and apply some filters to the duplicate and change its settings to overlay or something else (again, trial and error). Great for making colors more vivid, shadows deeper, etc

Dddo not. use the move/resize tool on small sections or sections that the eye will be drawn to. It ruins the quality, makes everything blurry. Unfortunately there's no alternative so if you *must* move something, be ready to redraw it. And similarly the gradient tool can make the transition between colors really choppy depending on your canvas settings, so you gotta manually smooth that out. Thankfully the program has a lot of brushes that are great for a soft seamless blend

BUT if you tap the screen with your finger instead of the stylus while you have the transform tool selected, it'll actually bring up a menu with more options, like perspective and stuff, which is very useful and very not straightforward