Well I figured those would be default but thank you!

What sort of advice are you looking for specifically?

Mostly like prices, if people have a limit on how much information a customer can give (mostly if the character has no pre-existing images or has a large amount they want you to look at), how many edits can be requested when the final product is done (Cause I've dealt with customers in the past who will ask for tiny edits over and over to the point I spent more time on minor line tweaking than the commission itself --it was an icon ), general do's and don't people are experienced that left a bad taste in their mouth, etc

Took a read of your reply above before typing this up, so I'll answer where I can.
I totally expect an extra fee when an artist is designing from a description instead of a pre-existing image. This tends to vary on the price of the reference sheet itself, but think of it as a complex character fee. I tend to see it go for around $20 extra.
Edits are up to you. Some allow 3, some 5, it's all what you're comfortable with. You could even state that if it's not previously mentioned and you wanted added there will be an additional fee. Since references get a bit wobbly, especially purely done on description, it may be best to offer three edits for free during the sketch phase, perhaps one or two on the colour phase and any done once the final product is received and agreed on will cost extra depending on the size of the edit.

Oh I like that idea for the fee on text descriptions, specially since in my younger days I took text based descriptions but found stuff to be too vague or so text heavy it felt easier to ask for an example image.
The sketch phase edits I usually do automatically since once lining and coloring starts it takes longer to make those edits ;;; But I like the idea of a limited number of free edits during that time.

The artist I got all of mine from had them stupid cheap while she built her confidence up with them, but is up at an adequate price now.

Front and back is a must, either a side shot for something intricate or a close up headshot with alt facial expression, other areas for a raw design like a tattoo or something, color palette area, name and owner, clothes (optional), genitals (optional), other things like that.

Price wise, default could be front and back and their choice of a side or close up headshot, color palette somewhere, and then start charging for other things if they're intricate enough. If it's a new character, expect a few changes. A minor change or 2 can be on the house, but if it's a major change or they're nitpicking 20 things, charge a little more for each edit. Watermark the shit out of it until you get the rest of the money from edits.

I dig that watermarking idea. I hate to think I'd be cheated but I've seen it happened out of the blue for people so better safe than sorry.

Aka don't cry plz