Well, if you're looking into doing a literate/semi-literate roleplay, I would suggest making a character skeleton for pretty posts, like this:
Blue jean baby, L.A. lady, seamstress for the band. Pretty eyed, pirate smile, you'll marry a music man. Ballerina, you must have seen her dancing in the sand. And now she's in me, always with me, tiny dancer in my hand. Jesus freaks out in the street, Handing tickets out for God. Turning back she just laughs. The boulevard is not that bad. Piano man he makes his stand In the auditorium, Looking on she sings the songs. The words she knows the tune she hums. But oh how it feels so real, lying here with no one near. Only you and you can hear me... When I say softly, slowly, "Hold me closer tiny dancer. Count the headlights on the highway. Lay me down in sheets of linen, you had a busy day today." Blue jean baby, L.A. lady, seamstress for the band. Pretty eyed, pirate smile, you'll marry a music man. Ballerina, you must have seen her dancing in the sand. And now she's in me, always with me, tiny dancer in my hand
ℜḯḉк⑂ Ðαᾔї℮ł﹩
You write your roleplay post here.
((Out Of Character: This is where you write things that are out of character. There are other examples of character skellies if you follow the link in my siggy. ))
There isn't really anything wrong to say, but unless it fits in the roleplay, I wouldn't suggest saying anything derogatory. Some people look for good spelling, but most people look for a good, detailed post.
If you run out of words to type, then just say you had writers block. However, that only works so many times. What I do is I add minute details to my sentences. Example: Instead of
Ricky ran to catch up with her. you could write
Ricky ran with haste to catch up with the girl whose heart he had mistakenly broken; his heart was pounding like a drum, and he ran so incredibly fast that the world around him was a blur of colors and she was the only thing that was clear.