If you decide to do your application independently and have got a simple/straightforward case but is still very unsure about Visa application prep + process due to ambiguity, I'd highly recommend buying Migrate's DIY Application Pack. It might seem like a hefty amount at first, especially when you are already tight on budget, however I can assure you that it is worth the cost. The pack is tailored to your case; it provides lists of specific documents needed in your application + templates of various letters to support your application. It also explains the application process very well so you will know what to expect. Lastly, it honestly gave me a much needed peaceful mind amidst the already stressful process. Thank you so much, guys! x