Home Construction Loan What Are The Problems In Submitting Bills While Availing Home Loan On Own Construction?

What are the problems in submitting bills while availing home loan on own construction? - home construction loan

I accept bank home loan to build my farm house. I want to build their home through a work contract and the supply of materials. Bank to take the bills for the loan in installments present use. What are the problems with the submission of invoices? I have no experience in the field of construction?