How can I extend my tourist visa in Thailand efficiently?

Yesterday I went to Jotiemm to extend my tourist visa. I got the paperwork and then went to the photo and copy place in the photo below. The lady who owns it charged me 100 BHT for 4 photos and 30 BHT for 6 copies. She then put all the paperwork together and helped me fill it out. Then advised me to come back to immigration tomorrow at 8am. It was late afternoon noon at the time. Showed up today at 8am. Since I had a receipt in my passport from getting my driver's license last month. That proved my address. They didn't need me to do a proof of address form. So they gave me a number I went into immigration. I was number five. I waited about 15 minutes and they took my passport and my 1900 BHT. Then I went outside, waited and finally got my passport after about a half hour. And I was out of there in a total of 50 minutes. Just so you know My visa was expiring on the 24th but they did it today before the 7 days or even 10 days. So now I have 30 more days in Thailand and I have to leave on the 25th of July. Be honest that lady at the copy center really helped me out so I went and bought her three kilos of Mongo's. Cost me 80 BHT.