photoshop text maufunction

[ghetto fab]

ma ps did dis be4 but i fixed it some how last time and i cant remember how i did it but when i do ma sig and all and do ma brushing and all dat when i write ma text on it nothing shows up but when im done writing it it has what i wrote as a text layer in tha layer box and whn im writting on 24 pt it writes really really small until u cant see it. any suggestions?

[SeasonalWeasel]

You may have done your New Document size by Centimetres instead, i did this once, so just crop out what you need, or do it again, but make sure your on Pixels?

[ghetto fab]

dis is what ma new document look like