Use our library of forms to quickly fill and sign your Collin Central Appraisal District forms online. Powerful and sophisticated, yet delightfully simple.(1) Certificado de salud firmado por un médico. (2) Registro de vacunas actualizado. The first step to starting your future at Collin College is to complete the credit online admissions application through Apply Texas. Fill out and download the Declaracion De Indigencia form in Collin County, Texas. Get a free, printable PDF or edit online. Customers should download the updated form before filling it out to ensure the formatting remains correct.