Base sa experience ko under spouse sponsorship, make sure na you submitted all the required documents and present it in a way na organized at in order, make sure na you filled up the forms base sa specified instructions, in my case,gumamit ako ng software base na application to fill up the forms in pdf format while yung wife ko naman filled it up in print (handwritten) she try hard though to make it clear and readable kasi sabi niya yung handwritting niya is a disaster talaga even wayback school days pa.
Case to case basis ang application natin kasi it depends talaga sa Visa officer na hahawak ng application natin, the most important thing is ma convince mo siya na genuine yung relationship mo with your partner. I suggest you gather all available supporting documents, pictures, letters, boarding passes, cards, remittance reciepts, telephone bills, chat logs, chat history, your love story, etc and present it well... i posted pictures of the documents that we submitted sa page 835... sana makatulong. good luck