i'm sachi-pon from deviantart. LOOOOONG rambling comment below!! i wrote it quickly so it sounds very rushed, i know! but i am someone who has multiple times found artists to agree to work with me so i had to say something.
1 isn't always true. some artists do want the writer to already have the story written. not every artist wants to help with the story. to some artists, it's a hassle and they prefer the writer to handle it. but okay yes, there are many times when an artist DOES want to write it.
i strongly agree with 2. so much. it's so weird when people expect artists to sign up for a full series. wtf!!! that is a huge expectation!
3 is unrealistic because yeah like you said it's extremely expensive. plus i wouldn't want to pay someone to do my comic art anyway. i would rather collaborate. because that way i know the artist genuinely likes my story and isn't just working on my story becase they want money, like my story alone has no value to them. and if i pay an artist, they can tell me all they want how much they like my story, but i can't be sure they aren't just telling me what i want to hear, flattering me because i am giving them money. there's no way to know for sure. but if i collab, then i KNOW for sure that the artist genuinely has faith in my story and wants to invest their time for no immediate reward because they think my story is good enough to be a success later on. actually there is an immediate reward: bringing a story they like to life!! after all i tried to write a good story and they did sign up because they like my story.
4 may be true on tapastic forums but there are other forums that are good for finding artists such as smackjeeves creative collaboration forum. dA's projects forum is good too. making friends online is also helpful because i have even found a collaborator just because she was already an online friend of mine, i didn't do a forum thread or anything.
about 5, you should keep the synopsis short but also have a long one ready to go if the artist wants more.
i don't like this quote from 6 "For you, writing a story is a few nights in front of your PC, but for an artist it's months upon months of spending five hours a day in front of a drawing pad." i have seen many similar quotes before. i am tired of this mentality that many artists have that writing a story is easier than drawing. writing a story is hard work and it takes more than "a few nights." that's why i said what i said about number 3. a story has a lot of value. if i write a story, i work hard on it, and i don't like the idea that i should pay someone else even though i am also doing work for no upfront pay! my work should be thought of as having value. i want the artist to think that my writing has value, which is why i choose to collab instead of commissioning comic pages. oh btw in case you're assuming i don't know what it's like to make drawings, i know very well what it's like. i draw all the time. in fact most people know me as someone who draws, not someone who writes. (my writings are kept private except to share with artists i collab with)
tips for writing a good story... i am neutral on number 1, it is not bad advice but i don't think it's absolutely necessary either. about 2, you said "You are absorbing 50% of the artists credits, and in most cases, 50% of the already barely existing profits, if existing at all." it's funny how you act like the writer is taking something that inherently belongs to the artist. in a collab, both people share equally and that's fair, no one is absorbing the other's profits. and also, the writer knows that profit may barely exist. but they work hard on their writing anyway. like i said, writing is hard work. so the writer works hard even when there may barely be a profit! that is dedication! it's not just the artist working for no upfront pay, the writer does too but no one ever mentions that. they think writing a story is not that hard, it's just an idea popping into your head and you write it down. in reality there is a lot of planning involved and a lot of frustrating difficulties. like i said, it's dedication. what the writer has to do is find an artist who likes their story enough to be dedicated too. it's possible! i myself have done it.
my own tip for people looking for an artist is, make your story sound really appealing. make it sound like this project will be fun and exciting! also explain how you plan to get the work to have publicity and popularity. and tell artists that you have the story generally figured out but are open to suggestions if the artist wants to make some.