The choice is yours here as there are no rules. Just pay attention to the general colour, shape and size that will suit your creative idea. Be aware that no two rocks are the same and some are more porous than others.

We prefer a smoother rock with a flatter edge as our surface as it's easier to draw on and keeps are POSCA Pen tips in good shape.

2. Preparation

Clean and dry are key as dirty or wet rocks will interfere with you work of art. 

Plan your theme and select the appropriate rock that will best suit the drawing you want to do, for example we are drawing solar system rocks so we try and match the colour, texture and size to the planet we are looking to illustrate. We event went as far as preparing the background (Space) on each rock.

Thank about your overall theme and how each rock component will tie your collection together.

At first it can be a bit finicky especially on smaller, rougher or uneven stones, but as the saying goes, practise makes perfect. If you’re just starting out aim for larger, smoother rocks so your paint pen tip glides smoothly over the surface. Note - The rougher the rock the more abrasive it will be and will be hard on your paint pen tip. The good news is that POSCA Paint pen tips are reversible and changeable in most of the range.

POSCA paint is buildable meaning you can do as many layers as you like or need. We recommend to start with the background first, allow the paint to dry and then build on top of the previous layer. As the paint is layer-able, don’t stress if you make a mistake as you can simple paint over it with a fresh layer, or simply wash it off with water.

Porous rocks absorbs more paint and dries quicker so you may need to apply multiple layers. The smoother or shiner the rock the longer it will take to dry so be careful not to smudge the paint.

After you have finished you drawing and painting on your rock and you are ready to ’set it in stone’ and make it permanent then using 2 coats of spray varnish should fix you paint to your rock.

Hold the spray can about 30cm from you rock and spray in a constant continuous motion for good coverage. 

There are 2 types of varnish Matte of Gloss, your choice as to which one you want.