Amend 2 x PDF Certificate Templates

Hi there, I have a 2 x certificate templates which I need amended please, I have attached them both for reference. It's a very simple job for the right person and I'd like it done very quickly. I want the following changes done: Logo - at current there is a yellow/blue one showing Natural Therapy School. I want this changed for the new one attached. (Green) There are four main areas of text that are currently grey and I want them to be black. They are: "This is to certify that" "Has successfully completed a comprehensive......" (all) "Approved by Principal......" (all) "Lee McIntosh....." (all) Where it says "Diploma in Swedish Massage" or "Diploma in Nutritional Therapy" I'd like this to remain the same size but be changed in colour to match the green of the new logo and to be more centred so that the spacing between what is above and below it is equal. Lastly, I'd like an additional logo added at the bottom. At current there is two logos, but there will now be three. Finally, I would like one singular border about 2mm thick around the entire document about 0.6cm away from the edge. This should be the same green as the logo. And that is all that I want done with both certificates. Ready to begin straight away. See files attached.