I'll still commission you regardless~

You know me, I buy in bulk anyway o:

I'd probably keep buying stuff anyways ;p. But in the end its up to you to do what you want.

I'd agree with the rest, 10 bucks for your level of quality isn't that bad of a price increase IMO

$10 is a completely reasonable increase, I think

reasonable increase in price. but you should probably leave flats up anyways just cause it doesn't hurt having it.

I'm not really in a position to buy commissions lately (maybe a sketch here or there) but you're definitely worth more than you're charging!

Could be a side-deal. Like, "would you like fries with that?".
People love fries. It wouldn't hurt to mention it in the commish discussion, even if it's right there on the page.
But that way, you can appease your other customers by letting them have their commissions and then there's the ones who want even more-
If you mark some of those extra time commissions in the description, people will start to notice the differences and potentially order more of them.

>It will also give you your answer of if you're "good enough" in your customer's eyes for a flat increase, if you're worried about that.

People do have to realize how much time it takes anyone to complete a piece. It's work, not magic. Time goes into it.
And should generally get at least minimum wage for it- though most charge upward 3x that (which is when people start to pitter out, if they're not fast enough- boosting costs, etcs)

Take a look at how long it takes you to do a piece, from flats onward, or take notes as you pass each phase. That gives you your real prices. I'm plenty used to a few artists charging 30$ an hour, though they can usually sketch out an entire page by then, usually have it inked too. They're kinda monsterous to watch sometimes!
But yes- if you're fast and can churn out a couple pieces a day, charge a bit more no problem! If you're slow, it may need a little more speed practice, but still should look at balancing with minimal wage at least!
>Not to be confused with quality drops! Never sacrifice them- as you're trying not to anyway! But certainly take the time to perfect the methods~

Ideally I want to charge more so that I can take my time more comfortably. Plus, as you said, it would still balance out due to the fact that I'm taking more time with it. I can get about two pieces a day done and posted (with exception to comics or sequences that naturally take more time to finish) even if I take my time, so I believe I can still provide results consistently enough.

Then there's your answer!
Price up the shineables- steady price the lowers. After all, it's in the shading and techniques that create more real time and practice, yes~?