Get a red colour based on pencil colours and not the marker. Get a rough page from your notebook or someplace where you keep the rough notebooks. Get one page from it and draw the outline of a heart. You can either use a pencil for that or you can simply draw it with a red colour. The outlook of a heart looks like an oval shape drawing that is bifurcated from in between. Everyone knows the heart shape so it shouldn’t be a problem for you to draw a heart on a piece of paper. A simple heart outline is required at the moment.
You need to draw the outline with some intensity so when you erase the entire drawing, a few lines are left that still gives you an idea about what a shape was created. However, it should be obscure. Don’t erase the drawing aggressively which will not leave any traces of the diagram, hence, making it difficult to draw.
Scribble with the help of a red colour keeping the scribbles inside the outline that was marked previously. The traces of erased drawing should help you stay inside the boundaries and guide you to the end. Scribble in a way that stripes are created and your scribbles should be obvious. A zig-zag pattern should be created inside the boundaries with the help of a colour.