When working on a fine-detail drawing, to get an extra sharp pencil point use both a sharpener and then gently run a very sharp craft knife over the tip. I use Kum Extra Long Point Pencil Sharpener and Jakar Hobby Knife.
If you use turpentine to thin your oil paints or oil pastels, a cheaper yet just as effective alternative is to head to the DIY section/shop and look out for ‘white spirit’. Price comparison: Winsor & Newton ‘Artists White Spirit’ (turpentine) from The Range – £7.99 per litre. Wickes ‘White Spirit Low Odour’ – £1.90 per litre. Note: Please follow environmental/safety advice provided with turpentine/white spirit.
Save jam jars, marmalade jars, coffee jars etc. Especially if you are using oils/water-mixable oils, you will need to replace water jars several times a year as grime builds up.
I was delighted to discover B pencils that exceeded the usual 6B maximum you often get in sketching sets, yet, in my personal experience 7B-9B pencils offer not much more depth. To get deeper shadows, try cross-hatching using a fine-liner. I use Pilot DR drawing pens in 01 and 02. BE WARNED: Use a light touch to avoid crushing the nib!
And whilst on the topic of fine-liners…don’t be tempted by pens that aren’t designed to be used in art work as they may bleed. Some things are ok to scrimp on, whilst others in the long run will cost you more. Plastic palettes and rulers – yes; paper, brushes, and mediums in general – no.