What's in my make up bag?

Having read a few other blogs (mainly due to everyone posting about their 50% off ELF hauls) I've noticed that this is a fairly common feature on girls blogs so thought I'd follow suit.
I should point out at this stage that while I have a great interest in make up and am always longing after really good products that will do wonders and that look good, I am certainly no expert! I don't know what's best for what, what brands work best for which products or the best techniques for applying make up. I feel that I am always unskilled in applying my make up and therefore not getting its full potential and instead just look stupid on a night out.
However, in my makeup bag as my essential products for a night out (this is when i'd most typically wear my make up - currently these days i'm too lazy to bother getting up early and spending ages putting make up to give me a flawless natural look that I so desire) are:

• ELF total face brush - this I love to use to apply my blusher and find it gives a good coverage and is soft to use
• Maybelline dream satin liquid foundation in Cameo (020) - this foundation I think is actually perhaps slightly too dark for my skin tone but i've never quite managed to achieve that perfectly matched foundation/concealer to skin tone, I really do need to get myself to a make up counter & get it done professionally for me. I like this foundation though as it gives a good coverage, is quite thick but doesn't require much product for a full coverage. It gives a slightly dewy look which I prefer to mattify using a powder.
• ELF studio blush in tickled pink - this is one of two of their studio blushes that I currently own and this is my favourite. It's a lovely light pink colour that I think gives a natural looking blushed colour. 
• L'oreal Paris Glam Shine 6h gloss brilliance in Oriental Fuschia (204) - this was actually given to me as a stocking filler and when I saw it I thought I wouldn't use it as it'd to be too dark and too shimmery but actually I tested it and I love it! It's a lovely colour that's not too far off my natural lip colour and I find it gives a nice glossy look without being sticky. It also lasts fairly well. The heart shaped wand makes it very easy to apply and curves to the lip shape well.
• Prestige cosmetics liquid eyeliner in black (01) - I love this eyeliner! Again it was given to me as a stocking filler after telling my mum that i'd like to try a liquid eyeliner having only used eyeliner pens before. It's a good deep black colour, can be used to create thin or thick lines and lasts forever. For me, it's a must have.
• Rimmel London Exaggerate waterproof eye definer in Noir (261) - this I use to line my lower eyelid and add further colour to the underneath of my upper lashes. I also tend to use it more day to day. I like the definition that it gives my eyes and is a good colour but can take a few goings over to get a good dark black colour rather than a grey colour. I find that it doesn't last all day and can smudge quite easily so when i'm wearing it I do have to keep checking the mirror.
• Maybelline New York Lash Stiletto and Lash Stiletto voluptuous (both in black) - another stocking filler! I really like this mascara; the voluptuous one I use on a night out for a more dramatic look and the ordinary one I use as an every day mascara. I like this mascara as it makes my lashes look long, adds some volume and doesn't clump. I find they can withstand a fair amount of rain before running and they last a long time. 
• Finally, vaseline - a staple for keeping lips hydrated!
• They don't fit in my make up bag and I have only recently purchased them but I'd like to add Elf's high definition powder and Elf's mineral blemish kit to this list and I'd say they will both become part of my essentials! 

So what's in your make up bag as your must haves?