During quashing the HC will not go into the evidence and determine whether the prosecution will culminate in conviction or not. The HC is not empowered to appropriate to itself the function of the trial court. Only a prima facie case is to be seen during quashing. Unless you can manifest that the allegations contained in the FIR are so inherently mala fide so as to render the process an abuse of law, the proceedings will not be quashed. You can plead the case on your own but it is advisable to engage the services of a lawyer to represent you in the HC. Quashing takes place rarely. It requires certain essentials to be fulfilled.